Patent Publication Number: US-2023145826-A1

Title: Fluorescent labeling agent and fluorescent dye

Description:
TECHNICAL FIELD 
     An embodiment of the present invention relates to a fluorescent labeling agent and a fluorescent dye that is used in a fluorescent labeling agent. 
     BACKGROUND ART 
     Bioimaging is a technique that visualizes proteins, cells, tissues, and the like in living organisms. Bioimaging is in wide use in the research area of biology and medical science such as clarification of the functions of molecules and cells in living organisms and research of drug discovery. 
     In particular, a fluorescence bioimaging method is an imaging method capable of dynamic observation, multicolor observation and high-sensitivity observation of phenomena. Recently, the fluorescence bioimaging method also has attracted attention as an imaging method capable of non-invasive diagnosis, and the application of this method in clinical practice such as diagnostic imaging with a small patient burden and real-time diagnosis during operations is expected. 
     The fluorescence bioimaging method is a method in which a target is visualized using a conjugate-type fluorescent dye that is specifically conjugated to a target substance or an accumulation-type fluorescent dye that is accumulated in a target site. In the method, fluorescence that is emitted when the fluorescent dye is irradiated with ultraviolet to near-infrared light is detected. 
     In accumulation-type fluorescence bioimaging in which accumulation in a target site is used, the labeling method is simple and rapid compared with that in conjugate-type fluorescence bioimaging in which specific conjugation to a target substance is used. In addition, the accumulation-type fluorescence bioimaging does not require specific conjugation to a target substance and thus has advantages in that no maturation time until the fluorescence intensity stabilizes is needed and the influence on target substances is minimized. 
     Patent Literature 1 and Patent Literature 2 disclose accumulation-type fluorescent dyes that are accumulated in phospholipids that form cell membranes. 
     Phospholipids form the surfaces of a variety of living substances such as cells, liposomes, and extracellular vesicles. In recent years, imaging of micro-substances having a phospholipid, such as liposome imaging for drug delivery system (DDS) and exosome imaging described in Patent Literature 1, has been gaining attention. In the case of using the fluorescent dyes described in Patent Literature 1 and Patent Literature 2 in order to perform such in vitro and in vivo imaging, there has been a problem of a low fluorescence intensity. 
     CITATION LIST 
     Patent Literature 
     [Patent Literature 1] 
     
         
         Japanese Patent Laid-Open No. 2009-524580 
       
    
     [Patent Literature 2] 
     
         
         Japanese Patent Laid-Open No. 2008-209361 
       
    
     Non-Patent Literature 
     [Non-Patent Literature 1] 
     
         
         Drug Delivery System Vol. 29, Issue 2, published Mar. 25, 2014, pp. 116 to 124 
       
    
     SUMMARY OF INVENTION 
     Technical Problem 
     In consideration of the above-described circumstances, an embodiment of the present invention provides a fluorescent dye that is excellent in terms of a property of being accumulated in phospholipids, exhibits a high fluorescence intensity, and, in particular, has a fluorescence intensity suitable for fluorescent labeling agents that are used for in vitro and in vivo imaging. 
     Solution to Problem 
     As a result of repeating intensive studies in order to solve the above-described problem, the present inventors found an excellent fluorescent dye and completed the present invention. That is, the embodiment of the present invention relates to the following. Here, the present invention is not limited to the following embodiments and includes a variety of embodiments. 
     One embodiment relates to a fluorescent labeling agent containing a fluorescent dye represented by the following general formula (1). 
       Q-Z—R 1 -R 2 -R 3   General Formula (1)
 
     Here, Q represents a residue of the fluorescent dye. 
     Z represents a direct bond, a substituted or unsubstituted alkylene group, or a substituted or unsubstituted arylene group. 
     R 1  represents a direct bond, —O—, —OP(═O)R 4 —, —OC(═O)—, —OS(═O) 2 —, —OSiR 5 R 6 —, —C(═O)—, or —C(═O)NH—. 
     R 2  represents a group selected from the group consisting of substituted or unsubstituted alkylene groups, substituted or unsubstituted arylene groups, and substituted or unsubstituted heterocyclic groups, or represents a group provided by combining these groups. 
     R 3  represents COOM 1 , NR 7 R 8 , N + R 9 R 10 R 11 , —OM 2 , or —P(═O)(OM 3 )OM 4 . 
     Here, R 4  represents a hydrogen atom, a hydroxyl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryloxy group, or a substituted or unsubstituted heterocyclic group. 
     R 5  and R 6  each independently represent a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group. 
     R 7 -R 11  each independently represent a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group. 
     M 1 , M 2 , M 3 , and M 4  each independently represent a hydrogen atom or a monovalent cation. 
     In one embodiment, the fluorescent labeling agent is preferably a phospholipid accumulation-type fluorescent labeling agent. 
     In one embodiment, the fluorescent dye is preferably a phthalocyanine dye represented by the following general formula (2). 
     
       
         
         
             
             
         
       
     
     Here, X 1 -X 16  each independently represent —Z—R 1 -R 2 -R 3 , a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted heterocyclic group, -AB, —SO 3 M 5 , or —COOM 6 . 
     In the above description, A represents a Group 16 element. B represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted cycloalkyl group, or a substituted or unsubstituted heterocyclic group. M 5  and M 6  each independently represent a monovalent cation. 
     in the X 1 -X 16 , adjacent substituents may be linked to each other to form a ring. 
     X 17  represents —Z—R 1 -R 2 -R 3 , a hydroxyl group, a halogen element, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryloxy group, —OP(═O)X 18 X 19 , —OC(═O)X 20 , —OS(═O) 2 X 21 , or —OSiX 22 X 23 X 24 . 
     Here, X 18  and X 19  each independently represent a hydrogen atom, a hydroxyl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryloxy group, or a substituted or unsubstituted heterocyclic group. 
     X 20  represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group. 
     X 21  represents a hydroxyl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group. 
     X 22 -X 24  each independently represent a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group. 
     Y represents a divalent to pentavalent metal atom, and k is an integer. In a case where Y is a divalent metal atom, k is 0, in a case where Y is a trivalent metal atom, k is 1, and, in a case where Y is a tetravalent or pentavalent metal atom, k is 2. 
     Here, in the above description, at least one of X 1 -X 17  is —Z—R 1 -R 2 -R 3 . 
     In one embodiment, the fluorescent labeling agent preferably contains a fluorescent dye in which X 17  in the general formula (2) is —Z—R 1 -R 2 -R 3 . 
     One embodiment relates to a compound represented by the following general formula (3). 
     
       
         
         
             
             
         
       
     
     Here, X 1 -X 16  each independently represent —Z—R 1 -R 2 -R 3 , a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted heterocyclic group, -AB, —SO 3 M 5 , or —COOM 6 . 
     In the above description, A represents a Group 16 element. B represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted cycloalkyl group, or a substituted or unsubstituted heterocyclic group. M 5  and M 6  each independently represent a monovalent cation. 
     in the X 1 -X 16 , adjacent substituents may be linked to each other to form a ring. 
     X 17  represents —Z—R 1 -R 2 -R 3 , a hydroxyl group, a halogen element, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryloxy group, —OP(═O)X 18 X 19 , —OC(═O)X 20 , —OS(═O) 2 X 21 , or —OSiX 22 X 23 X 24 . 
     Here, X 18  and X 19  each independently represent a hydrogen atom, a hydroxyl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryloxy group, or a substituted or unsubstituted heterocyclic group. 
     X 20  represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group. 
     X 21  represents a hydroxyl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group. 
     X 22 -X 24  each independently represent a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group. 
     Y represents a divalent to pentavalent metal atom, and k is an integer. In a case where Y is a divalent metal atom, k is 0, in a case where Y is a trivalent metal atom, k is 1, and, in a case where Y is a tetravalent or pentavalent metal atom, k is 2. 
     Here, in the above description, at least one of X 1 -X 17  is —Z—R 1 -R 2 -R 3  and is as described below. 
     Z represents a direct bond, a substituted or unsubstituted alkylene group, or a substituted or unsubstituted arylene group. 
     R 1  represents a direct bond, —O—, —OP(═O)R 4 —, —OC(═O)—, —OS(═O) 2 —, —OSiR 5 R 6 —, —C(═O)—, or —C(═O)NH—. 
     R 2  represents a group selected from the group consisting of substituted or unsubstituted alkylene groups, substituted or unsubstituted arylene groups, and substituted or unsubstituted heterocyclic groups, or represents a group provided by combining these groups. 
     R 3  represents COOM 1 , NR 7 R 8 , N + R 9 R 10 R 11 , —OM 2 , or —P(═O)(OM 3 )OM 4 . 
     Here, R 4  represents a hydrogen atom, a hydroxyl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryloxy group, or a substituted or unsubstituted heterocyclic group. R 5  and R 6  each independently represent a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group. R 7 -R 11  each independently represent a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group. M 1 , M 2 , M 3 , and M 4  each independently represent a hydrogen atom or a monovalent cation. 
     The disclosure of the present application is associated with the topic described in Japanese Patent Application No. 2020-066924, filed Apr. 2, 2020, and the entire disclosed content thereof is incorporated herein by reference. 
     Advantageous Effects of Invention 
     According to the embodiments of the present invention, it becomes possible to provide a fluorescent dye having a fluorescence intensity suitable for fluorescent labeling agents that are used for in vitro and in vivo imaging by the introduction of a functional group having an excellent property of being accumulated in phospholipids. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG.  1    is a graph showing the evaluation results of the fluorescence intensities of fluorescent labeling agents 1, 15, 19, 24, 25, 68, and 75. 
         FIG.  2    is a fluorescence micrograph of a cell labeled with the fluorescent labeling agent 1. 
         FIG.  3    is a fluorescence micrograph of a cell labeled with the fluorescent labeling agent 15. 
         FIG.  4    is a fluorescence micrograph of a cell labeled with the fluorescent labeling agent 19. 
         FIG.  5    is a fluorescence micrograph of a cell labeled with the fluorescent labeling agent 24. 
         FIG.  6    is a fluorescence micrograph of a cell labeled with the fluorescent labeling agent 25. 
         FIG.  7    is a fluorescence micrograph of a cell labeled with the fluorescent labeling agent 68. 
         FIG.  8    is a fluorescence micrograph of a cell labeled with the fluorescent labeling agent 75. 
         FIG.  9    is a fluorescence micrograph of a cell labeled with the fluorescent labeling agent 42. 
         FIG.  10    is a fluorescence micrograph of a cell labeled with the fluorescent labeling agent 53. 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     Hereinafter, an embodiment of the present invention will be described in detail. Here, the embodiment of the present invention is not limited to the following description and includes a variety of embodiments. 
     A fluorescent labeling agent, which is one embodiment of the present invention, contains a fluorescent dye represented by the following general formula (1). The compound represented by the following general formula (1) is a fluorescent dye. 
       Q-Z—R 1 -R 2 -R 3   General Formula (1)
 
     Here, Q represents a residue of the fluorescent dye. In the present specification, the fluorescent dye is a dye that emits fluorescence when irradiated with ultraviolet to near-infrared light (for example, light with a wavelength of 560 to 900 nm) and may be a well-known compound. The fluorescent dye is not particularly limited, and examples thereof include dyes of fluoresceins, rhodamines, coumarins, cyanines, phthalocyanines, diketopyrrolopyrroles, boron-dipyrromethenes (BODIPY), xanthenes, pyrenes, merocyanines, perylenes, acridines, stilbenes, pyrromethenes, acridines, unbelliferones, and the like. 
     In one embodiment, the compound represented by the general formula (1) (fluorescent dye) may have, for example, the skeleton of a dye exemplified above as the residue Q of the fluorescent dye. That is, the compound represented by the general formula (1) may be compound having a structure in which at least one substituent (functional group) represented by —Z—R 1 -R 2 -R 3  has been introduced into the skeleton of the dye exemplified above. 
     In one embodiment, the fluorescent dye is preferably phthalocyanines from the viewpoint of stability and fluorescence wavelength. In one embodiment, a compound represented by the following general formula (2) (phthalocyanine dye) can be preferably used as the fluorescent dye. Here, a premise is that at least one of X 1 -X 17  is a substituent represented by —Z—R 1 -R 2 -R 3 . 
     In a case where the fluorescent dye that configures the fluorescent labeling agent contains the compound represented by the following general formula (2), it is possible to easily obtain a fluorescent labeling agent having excellent durability from the skeleton of the phthalocyanine dye. In addition, it is possible to easily obtain luminance at wavelengths suitable for in vitro and in vivo bioimaging (for example, 650 to 900 nm) from the skeleton of the phthalocyanine dye. 
     
       
         
         
             
             
         
       
     
     In the fluorescent dye of the embodiment, “—Z—R 1 -R 2 -R 3 ” is a substituent having a hydrophilic group and is capable of enhancing the property of the fluorescent dye being accumulated in phospholipids through the electrostatic interaction with a hydrophilic group in a phospholipid. The specific configuration of the substituent is as described below. 
     Z represents a direct bond, a substituted or unsubstituted alkylene group, or a substituted or unsubstituted arylene group. In one embodiment, Z is preferably a direct bond. 
     R 1  represents a direct bond, —O—, —OP(═O)R 4 —, —OC(═O)—, —OS(═O) 2 —, —OSiR 5 R 6 —, —C(═O)—, or —C(═O)NH—. In one embodiment, R 1  is preferably —OP(═O)R 4 —, —OS(═O) 2 —, or —OSiR 5 R 6 —. 
     R 2  represents a group selected from the group consisting of substituted or unsubstituted alkylene groups, substituted or unsubstituted arylene groups, and substituted or unsubstituted heterocyclic groups, or represents a group provided by combining these groups. In one embodiment, R 2  is preferably a substituted or unsubstituted alkylene group or a substituted or unsubstituted arylene group preferably a substituted or unsubstituted alkylene group. In one embodiment, R 2  is preferably an alkylene group. The number of carbon atoms in the main chain of the alkylene group is preferably 1 to 10. 
     R 3  represents —COOM 1 , —NR 7 R 8 , or —N + R 9 R 10 R 11 . In addition, R 3  represents —OM 2 , or —P(═O)(OM 3 ) 4 . In one embodiment, R 3  is preferably —COOM 1 , —NR 7 R 8 , —OM 2 , or —P(═O)(OM 3 )OM 4 . 
     Here, R 4  represents a hydrogen atom, a hydroxyl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryloxy group, or a substituted or unsubstituted heterocyclic group. In one embodiment, R 4  is preferably a hydrogen atom, a hydroxyl group, a substituted or unsubstituted alkyl group, or an unsubstituted aryl group. 
     R 5  and R 6  each independently represent a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group. In one embodiment, R 5  and R 6  are each independently preferably a substituted or unsubstituted alkyl group or an unsubstituted aryl group. The alkyl group is more preferably a linear or branched alkyl group having 1 to 5 carbon atoms. 
     R 7 -R 11  each independently represent a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group. In one embodiment, R 7 -R 11  are each independently preferably a hydrogen atom or a substituted or unsubstituted alkyl group. The alkyl group is more preferably a linear or branched alkyl group having 1 to 5 carbon atoms. 
     M 1 , M 2 , M 3 , and M 4  each independently represent a hydrogen atom or a monovalent cation. Examples of the monovalent cation include alkali metals, quaternary amines, and the like. Examples of the alkali metals include lithium, sodium, potassium, rubidium, cesium, and the like. In one embodiment, M 1 , M 2 , M 3 , and M 4  are each preferably a hydrogen atom. 
     X 1 -X 16  each independently represent a hydrogen atom or a substituent selected from the group consisting of —Z—R 1 -R 2 -R 3 , substituted or unsubstituted alkyl groups, substituted or unsubstituted aryl groups, substituted or unsubstituted cycloalkyl groups, substituted or unsubstituted alkenyl groups, substituted or unsubstituted heterocyclic groups, -AB, —SO 3 M 5 , and —COOM 6 . 
     In the above description, M 5  and M 6  each independently represent a monovalent cation. Examples of the monovalent cation include alkali metals, quaternary amines, and the like. Examples of the alkali metals include lithium, sodium, potassium, rubidium, cesium, and the like. 
     In one embodiment, at least one, preferably four or more, of X 1 -X 16  is preferably the above-described substituent. In one embodiment, the above-described substituents with respect to the dye skeleton are each independently preferably a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or -AB. 
     In the above-described formula -AB, A represents a Group 16 element. Examples of the Group 16 element include oxygen, sulfur, selenium, tellurium, and the like. In one embodiment, A is preferably oxygen, sulfur, or selenium. From the viewpoint of easy synthesis and stability, oxygen or sulfur is more preferable. From the viewpoint of the fluorescence intensity, oxygen is still more preferable. B represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted cycloalkyl group, or a substituted or unsubstituted heterocyclic group, each of which is as described above. In one embodiment, B is preferably a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group. Therefore, in one embodiment, -AB is preferably —OR, —OAr, —SR, or —SAr. Here, R represents an alkyl group, and Ar represents an aryl group. 
     Y represents a divalent to pentavalent metal atom, and k is an integer. In a case where Y is a divalent metal atom, k is 0, in a case where Y is a trivalent metal atom, k is 1, and, in a case where Y is a tetravalent or pentavalent metal atom, k is 2. Examples of the divalent metal atom include Mg, Cu, Zn, and the like. Examples of the trivalent metal atom include Al, Ga, In, and the like. Examples of the tetravalent metal atom include Si, Mn, Sn, Cr, Zr, and the like. Examples of the pentavalent metal atom include P and the like. From the viewpoint of the fluorescence intensity, Y is preferably Al, Si, or P and more preferably Al. From the viewpoint of light resistance, Y is preferably Al or Si. 
     In one embodiment, in X 1 -X 16 , adjacent substituents may be linked to each other to form a ring. The structure of the ring may be any of a cycloalkyl, a cycloalkene, an aryl, and a heteroaryl and forms a condensed ring with an aromatic ring in a phthalocyanine skeleton. Furthermore, the structure of the ring may be substituted or may not be substituted. The number of carbon atoms that form the structure of the ring may be 2 to 30 and is preferably in a range of 4 to 6. The ring is preferably a five-membered ring or a six-membered ring. 
     In one embodiment, adjacent substituents are preferably linked to each other to form a phenylene group. In this case, the structure of the ring bonds to an aromatic ring in the phthalocyanine skeleton, whereby a naphthalene structure is formed. In a different embodiment, adjacent substituents may be linked to each other to form a ring having a nitrogen atom. In this case, the structure of the ring bonds to an aromatic ring in the phthalocyanine skeleton, whereby, for example, an imidazole structure is formed. The ring structure such as the above-described naphthalene structure or imidazole structure may further have a substituent such as an alkyl group or an aryl group. 
     X 17  represents —Z—R 1 -R 2 -R 3 , a hydroxyl group, a halogen element, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryloxy group, —OP(═O)X 18 X 19 , —OC(═O)X 20 , —OS(═O) 2 X 21 , or —OSiX 22 X 23 X 24 . In one embodiment, X 17  is preferably —Z—R 1 -R 2 -R 3  or a hydroxyl group. Z, R 1 , R 2 , and R 3  are as described above. 
     Here, X 18  and X 19  each independently represent a hydrogen atom, a hydroxyl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryloxy group, or a substituted or unsubstituted heterocyclic group. 
     X 20  represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group. 
     X 21  represents a hydroxyl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group. 
     X 22 -X 24  each independently represent a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group. 
     Here, the alkyl groups as the R 4 -R 11  and X 1 —X 24  are each independently selected. The alkyl groups may be substituted or may not be substituted. 
     Examples of the alkyl groups include linear or branched alkyl groups. Specific examples thereof include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group, an octyl group, a nonyl group, a decyl group, a dodecyl group, an octadecyl group, an isopropyl group, an isobutyl group, an isopentyl group, a 2-ethylhexyl group, a sec-butyl group, a tert-butyl group, a sec-pentyl group, a tert-pentyl group, a tert-octyl group, a neopentyl group, and the like. The number of carbon atoms in the alkyl group is preferably in a range of 1 to 30. The number of carbon atoms is more preferably in a range of 1 to 20 and still more preferably in a range of 1 to 10. 
     Examples of the substituent in the alkyl group include, in addition to a halogen atom such as fluorine, chlorine, or bromine, a hydroxyl group, an amino group, a nitro group, a formyl group, a cyano group, and a carboxyl group, the above-described alkyl groups, an aryl group to be described below, a cycloalkyl group, and a heterocyclic group. In addition, in a case where a part of the structure is substituted by an amide bond (—NHCO—), an ester bond (—COO—), an ether bond (—O—), a urea bond (—NHCONH—), or a urethane bond (—NHCOO—), the substituted part is also regarded as “substituent”. 
     Therefore, the substituted alkyl group means an alkyl group having the above-described substituent. The substituted alkyl groups may be alkyl groups having one or more substituents. For example, specific examples of the alkyl groups having a halogen atom as a substituent include a trifluoromethyl group, a 2,2,2-trifluoroethyl group, —(CF 2 ) 4 CF 3 , —(CF 2 ) 5 CF 3 , —(CF 2 ) 6 CF 3 , —(CF 2 ) 7 CF 3 , —(CF 2 ) 8 CF 3 , a trichloromethyl group, a 2,2-dibromoethyl group, and the like. 
     Specific examples of the alkyl groups having an amide bond as a substituent include —CH 2 —CH 2 —CH 2 —NHCO—CH 2 —CH 3 , —CH 2 —CH(—CH 3 )—CH 2 —COO—CH 2 —CH 3 , —CH 2 —CH 2 —CH 2 —OCO—CH 2 —CH 3 , —CH 2 —CH 2 —CH 2 —CH 2 —NHCO—CH 2 —CH(CH 2 —CH 3 )—CH 2 —CH 2 —CH 2 —CH 3 , —(CH 2 ) 5 —NHCO—(CH 2 ) 11 —CH 3 , —CH 2 —CH 2 —CH 2 —C(—NHCO—CH 2 —CH 3 ) 3 , and the like. The number of carbon atoms in the alkyl group having an amide bond as a substituent is preferably in a range of 2 to 30. The number of carbon atoms is more preferably in a range of 2 to 10 and still more preferably in a range of 2 to 5. 
     Specific examples of the alkyl groups having an ester bond as a substituent include —CH 2 —CH 2 —CH 2 —COO—CH 2 —CH 3 , —CH 2 —CH(—CH 3 )—CH 2 —NHCO—CH 2 —CH 3 , —CH 2 —CH 2 —CH 2 —COO—CH 2 —CH 3 , —CH 2 —CH 2 —CH 2 —CH 2 —COO—CH 2 —CH(CH 2 —CH 3 )—CH 2 —CH 2 —CH 2 —CH 3 , —(CH 2 ) 5 —COO—(CH 2 ) 11 —CH 3 , —CH 2 —CH 2 —CH 2 —CH—(COO—CH 2 —CH 3 ) 2 , and the like. The number of carbon atoms in the alkyl group having an ester bond as a substituent is preferably in a range of 2 to 30. The number of carbon atoms is more preferably in a range of 2 to 10 and still more preferably in a range of 2 to 5. 
     Specific examples of the alkyl groups having an ether bond as a substituent include —CH 2 —O—CH 3 , —CH 2 —CH 2 —O—CH 2 —CH 3 , —CH 2 —CH 2 —CH 2 —O—CH 2 —CH 3 , —(CH 2 —CH 2 —O) n —CH 3  (here, n is an integer of 1 to 8), —(CH 2 —CH 2 —CH 2 -0) m -CH 3  (here, m is an integer of 1 to 5), —CH 2 —CH(CH 3 )—O—CH 2 —CH 3 —, —CH 2 —CH—(OCH 3 ) 2 , and the like, but are not limited thereto. The number of carbon atoms in the alkyl group having an ether bond as a substituent is preferably in a range of 2 to 30. The number of carbon atoms is more preferably in a range of 2 to 10 and still more preferably in a range of 2 to 5. 
     Specific examples of the alkyl groups having a urea bond (—NHCONH—) as a substituent include —CH 2 —NHCONH—CH 3 , —CH 2 —CH 2 —NHCONH—CH 2 —CH 3 , —CH 2 —CH 2 —CH 2 —NHCONH—CH 2 —CH 3 , —(CH 2 —CH 2 —NHCONH) n —CH 3  (here, n is an integer of 1 to 8), —(CH 2 —CH 2 —CH 2 —NHCONH) m —CH 3  (here, m is an integer of 1 to 5), —CH 2 —CH(CH 3 )—NHCONH—CH 2 —CH 3 —, —CH 2 —CH—(NHCONHCH 3 ) 2 , and the like, but are not limited thereto. The number of carbon atoms in the alkyl group having an ether bond as a substituent is preferably in a range of 2 to 30. The number of carbon atoms is more preferably in a range of 2 to 10 and still more preferably in a range of 2 to 5. 
     Specific examples of the alkyl groups having a urethane bond as a substituent include —CH 2 —CH 2 —CH 2 —NHCOO—CH 2 —CH 3 , —CH 2 —CH(—CH 3 )—CH 2 —NHCOO—CH 2 —CH 3 , —CH 2 —CH 2 —CH 2 —NHCOO—CH 2 —CH 3 , —CH 2 —CH 2 —CH 2 —CH 2 —NHCOO—CH 2 —CH(CH 2 —CH 3 )—CH 2 —CH 2 —CH 2 —CH 3 , —(CH 2 ) 5 —NHCOO—(CH 2 ) 11 —CH 3 , —CH 2 —CH 2 —CH 2 —CH—(NHCOO—CH 2 —CH 3 ) 2 , and the like. The number of carbon atoms in the alkyl group having an ester bond as a substituent is preferably in a range of 2 to 30. The number of carbon atoms is more preferably in a range of 2 to 10 and still more preferably in a range of 2 to 5. 
     Specific examples of the alkyl groups having two or more of the amide bond (—NHCO—), the ester bond (—COO—), the ether bond (—O—), the urea bond (—NHCONH—), and the urethane bond (—NHCOO—) as substituents include —CH 2 —CH 2 —NHCO—CH 2 —CH 2 —O—CH 2 —CH(CH 2 —CH 3 )—CH 2 —CH 2 —CH 2 —CH 3 , —CH 2 —CH 2 —COO—CH 2 —CH 2 —O—CH 2 —CH 2 —NHCOO—CH 2 —CH(CH 2 —CH 3 )—CH 2 —CH 2 —CH 2 —CH 3 , —CH 2 —CH 2 —NHCO—CH 2 (OCO—CH 2 )—CH 2 —. The number of carbon atoms in the alkyl group having two or more of the amide bond (—NHCO—), the ester bond (—COO—), the ether bond (—O—), the urea bond (—NHCONH—), and the urethane bond (—NHCOO—) as substituents is preferably in a range of 3 to 30. The number of carbon atoms is more preferably in a range of 3 to 10 and still more preferably in a range of 3 to 5. 
     The aryl groups as the R 4 -R 11  and X 1 —X 24  are each independently selected. The aryl groups may be substituted or may not be substituted. 
     Examples of the aryl groups include monocyclic or condensed polycyclic aryl groups. Examples thereof include a phenyl group, a 1-naphthyl group, a 2-naphthyl group, a p-biphenyl group, a m-biphenyl group, a 2-anthryl group, a 9-anthryl group, a 2-phenanthryl group, a 3-phenanthryl group, a 9-phenanthryl group, a 2-fluorenyl group, a 3-fluorenyl group, a 9-fluorenyl group, a 1-pyrenyl group, a 2-pyrenyl group, a 3-perylenyl group, an o-tolyl group, a m-tolyl group, a p-tolyl group, a 4-methylbiphenyl group, a terphenyl group, a 4-methyl-1-naphthyl group, a 4-tert-butyl-1-naphthyl group, a 4-naphthyl-1-naphthyl group, a 6-phenyl-2-naphthyl group, a 10-phenyl-9-anthryl group, a spirofluorenyl group, a 2-benzocyclobutenyl group, and the like. The number of carbon atoms in the aryl group is preferably in a range of 6 to 18. The number of carbon atoms is more preferably in a range of 6 to 10. 
     The substituent in the substituted aryl group may be the same as the substituent exemplified as the substituent in the alkyl group. 
     The cycloalkyl groups as X 1 -X 16  are each independently selected. The cycloalkyl groups may be substituted or may not be substituted. Examples of the cycloalkyl groups include a cyclopentyl group, a cyclohexyl group, a 2,5-dimethylcyclopentyl group, a 4-tert-butylcyclohexyl group, and the like. In addition, the number of carbon atoms in the cycloalkyl group is preferably in a range of 3 to 12. The number of carbon atoms is more preferably in a range of 3 to 6. The substituent in the substituted cycloalkyl group may be the same as the substituent exemplified as the substituent in the alkyl group. 
     The alkenyl groups as X 1 -X 16  are each independently selected. The alkenyl groups may be substituted or may not be substituted. Examples of the alkenyl groups include linear or branched alkenyl groups. The alkenyl group generally refers to a group having one double bonds in the structure; however, in the present specification, the alkenyl group may have a plurality of double bonds in the structure. Specific examples of the alkenyl groups include a vinyl group, a 1-propenyl group, an allyl group, a 2-butenyl group, a 3-butenyl group, an isopropenyl group, an isobutenyl group, a 1-pentenyl group, a 2-pentenyl group, a 3-pentenyl group, a 4-pentenyl group, a 1-hexenyl group, a 2-hexenyl group, a 3-hexenyl group, a 4-hexenyl group, a 1,3-butadienyl group, and the like. The number of carbon atoms in the alkenyl group is preferably in a range of 2 to 18. The number of carbon atoms is more preferably 2 to 10 and still more preferably 2 to 5. The substituent in the substituted alkenyl group may be the same as the substituent exemplified as the substituent in the alkyl group. 
     The heterocyclic groups as the R 2 , R 4 -R 11  and X 1 -X 24  are each independently selected. The heterocyclic groups may be substituted or may not be substituted. 
     Examples of the heterocyclic groups include aliphatic heterocyclic groups or aromatic heterocyclic groups. Specific examples thereof include a pyridyl group, a pyrazyl group, a piperidino group, a pyranyl group, a morpholino group, an acridinyl group, and the like. In addition, specific examples thereof also include groups represented by the following structural formula. The number of carbon atoms of the heterocyclic group (the number of carbon atoms that configure the ring) is preferably 4 to 12. The number of ring members is preferably 5 to 13. 
     
       
         
         
             
             
         
       
     
     The substituent in the substituted heterocyclic group may be the same as the substituent exemplified as the substituent in the alkyl group. Examples of the substituted heterocyclic group include a heterocyclic group 3-methylpyridyl group, a N-methylpiperidyl group, a N-methylpyrrolyl group, and the like. 
     The alkoxy groups as the R 4 , X 18 , and X 19  are each independently selected. The alkoxy groups may be substituted or may not be substituted. 
     Examples of the alkoxy groups include linear or branched alkoxyl groups. Specific examples thereof include a methoxy group, an ethoxy group, a propoxy group, an isopropoxy group, an n-butoxy group, an isobutoxy group, a tert-butoxy group, a neopentyloxy group, a 2,3-dimethyl-3-pentyloxy group, an n-hexyloxy group, an n-octyloxy group, a stearyloxy group, a 2-ethylhexyloxy group, and the like. The number of carbon atoms in the alkoxyl group is preferably in a range of 1 to 6. 
     The substituent in the substituted alkoxyl group may be the same as the substituent exemplified as the substituent in the alkyl group. 
     The substituent in the substituted alkoxy group may be the same as the substituent exemplified as the substituent in the alkyl group. Specific examples of the substituted alkoxy group include a trichloromethoxy group, a trifluoromethoxy group, a 2,2,2-trifluoroethoxy group, a 2,2,3,3-tetrafluoropropoxy group, a 2,2-bis(trifluoromethyl)propoxy group, a 2-ethoxyethoxy group, a 2-butoxyethoxy group, a 2-nitropropoxy group, a benzyloxy group, and the like. 
     The aryloxy groups as the R 4 , X 18 , and X 19  are each independently selected. The aryloxy groups may be substituted or may not be substituted. 
     Examples of the aryloxy groups include monocyclic or condensed polycyclic aryloxy groups. Specific examples thereof include a phenoxy group, a p-methylphenoxy group, a naphthyloxy group, an anthryloxy group, and the like. The aryloxy group is preferably a monocyclic aryloxy group. In addition, an aryloxy group having 6 to 12 carbon atoms is preferable. 
     The substituent in the substituted aryloxy group may be the same as the substituent exemplified as the substituent in the aryl group. Examples of the substituent aryloxy group include a p-nitrophenoxy group, a p-methoxyphenoxy group, a 2,4-dichlorophenoxy group, a pentafluorophenoxy group, a 2-methyl-4-chlorophenoxy group, and the like. 
     The alkylene groups as the Z and R 2  are each independently selected. The alkylene groups may be substituted or may not be substituted. Examples of the alkylene groups include divalent groups obtained by removing one hydrogen atom from the above-described alkyl group. Specific examples of the substituted or unsubstituted alkylene group include —CH 2 —CH 2 —, —CH 2 —CH 2 —CH 2 —NHCO—CH 2 —CH 2 —, —CH 2 —CH 2 —CH 2 —OCO—CH 2 —CH 2 —, —CH 2 —CH 2 —CH 2 —O—CH 2 —CH 2 —, and the like. 
     The arylene groups as the Z and R 2  are each independently selected. The arylene groups may be substituted or may not be substituted. Examples of the arylene groups include divalent groups obtained by removing one hydrogen atom from the above-described aryl group. The number of carbon atoms in the arylene group is preferably in a range of 6 to 10. In one embodiment, the arylene groups may be a phenylene group or a naphthylene group. Specific examples of the substituted or unsubstituted arylene groups include groups represented by the following structural formula. 
     
       
         
         
             
             
         
       
     
     One embodiment of the present invention relates to a fluorescent labeling agent containing the fluorescent dye. This fluorescent labeling agent is applicable for fluorescent labeling in bioimaging in a wide range of fields from biochemical research to medical analyses. For example, the fluorescent labeling agent can be used for fluorescent labeling and other uses in the genetic diagnosis field, the immunodiagnosis field, the medical development field, the regenerative medicine field, the environmental testing field, the biotechnology field, the fluorescent inspection field, and other fields. 
     Particularly, in the fluorescent labeling agent of the embodiment, the structure represented by —Z—R 1 -R 2 -R 3  (substituent) in the fluorescent dye has a function of interacting with phospholipids. Therefore, the fluorescent labeling agent can be preferably used as a phospholipid accumulation-type fluorescent labeling agent. The phospholipid accumulation-type fluorescent labeling agent can be preferably used as a fluorescent labeling agent in the dyeing of cell membranes, tracking of exosomes, liposome imaging for drug delivery system (DDS), and the like. 
     In the fluorescent labeling agent of the embodiment, the concentration of the fluorescent dye is not particularly limited. For example, in the case of handling cells, the concentration of the fluorescent dye is preferably as low as possible in consideration of the influence on the functional disorder of the cells, the inhibition of growth, and the like. In one embodiment, the concentration of the fluorescent dye with respect to 10,000 cells/well of cells seeded in a 96-well plate is preferably 100 μM or lower. The concentration is more preferably 50 μM or lower and still more preferably 10 μM or lower. The fluorescent labeling agent of the embodiment enables imaging with a high fluorescence intensity even when the concentration of the fluorescent dye is low due to the excellent property of being accumulated in phospholipids. Therefore, even when the concentration of the fluorescent dye is low, for example, 2 μM or lower, the fluorescent labeling agent enables detection with higher accuracy. 
     The fluorescent labeling agent of the embodiment needs to contain the fluorescent dye of the embodiment and may also contain other components as necessary. The other components may be well-known components in the corresponding technical fields. Examples thereof include a solvent, an amphipathic substance, and the like. 
     The solvent may be water or an organic solvent and is more preferably water. In consideration of the solubility of the fluorescent dye, water and an organic solvent may be used as a mixture. For example, the organic solvent is preferably ethanol or dimethyl sulfoxide (DMSO). 
     The amphipathic substance is a generic term of compounds having a hydrophilic group and a hydrophobic group in one molecule. Specific examples thereof include surfactants, phospholipids, and the like. Only one kind of amphipathic substance may be used or two or more amphipathic substances may be used as a mixture. In the fluorescent labeling agent of the embodiment, the amphipathic substance is not particularly limited and may be any compound as long as the compound is capable of solubilizing water-insoluble fluorescent dyes that emit fluorescence in the near-infrared range in water. While not particularly limited, specific examples of the amphipathic substance that can be used include the followings. 
     Examples of the surfactants include nonionic surfactants, cationic surfactants, anionic surfactants, polymer surfactants, and the like. 
     Examples of the nonionic surfactants include polyoxyethylene sorbitan-based fatty acid esters such as Tween (registered trademark) 20, Tween (registered trademark) 40, Tween (registered trademark) 60, and Tween (registered trademark) 80, polyoxyethylene castor oil derivatives such as Cremophor (registered trademark) EL and Cremophor (registered trademark) RH60, 12-hydroxy stearic acid-polyethylene glycol copolymers such as Solutol (registered trademark) HS15, octylphenol ethoxylates such as Triton (registered trademark) X-100 and Triton (registered trademark) X-114, and the like. 
     Examples of the cationic surfactants include alkyltrimethylammonium salts such as stearyltrimethylammonium chloride and lauryltrimethylammonium chloride, alkylpyridinium salts such as cetylpyridinium chloride, alkyl quaternary ammonium salts such as distearyldimethylammonium chloride, dialkyldimethylammonium salt, and poly(N,N′-dimethyl-3,5-methylene piperidinium) chloride, alkyldimethylbenzylammonium salts, alkylisoquinolinium salts, dialkylmorpholinium salts, polyoxyethylenealkylamine, alkylamine salts, polyamine fatty acid derivatives, amyl alcohol fatty acid derivatives, benzalkonium chloride, benzethonium chloride, and the like. 
     Examples of the anionic surfactants include sodium dodecyl sulfate, dodecylbenzene sulfonate, decylbenzene sulfonate, undecylbenzene sulfonate, tridecylbenzene sulfonate, and nonylbenzene sulfonate, sodium, potassium and ammonium salts thereof, and the like. 
     Examples of the polymer surfactants include block copolymers of polyvinyl alcohol, polyoxyethylene polyoxypropylene glycol, polyethylene glycol-polyalkyl, polyethylene glycol-polylactic acid, polyethylene glycol-polycaprolactone, polyethylene glycol-polyglycolic acid, polyethylene glycol-poly(lactide-glycolide). 
     In one embodiment, the fluorescent labeling agent of the embodiment may contain one or more of the compounds exemplified as the amphipathic substance. However, the fluorescent labeling agent of the embodiment has an excellent property of being accumulated in a target site such as phospholipids and thus enables high-sensitivity detection with no need of any amphipathic substance. 
     In the fluorescent labeling agent of the embodiment, the fluorescent dye preferably contains a phthalocyanine dye. A method for synthesizing the phthalocyanine dye is not particularly limited. For example, first, a dye having a phthalocyanine skeleton (phthalocyanine metal complex) is synthesized by a well-known method using a phthalonitrile derivative as a raw material. Next, a component having a substituent (—Z-R 1 -R 2 -R 3 ) is added to the dye, and the component and the dye are reacted in a dimethyl sulfoxide solvent while being heated and stirred. Such a reaction makes it possible to obtain a desired fluorescent dye. As the component having a substituent, it is possible to use, for example, an acidic compound or a compound to be mentioned as an axial ligand in examples to be described below. 
     In a case where the phthalonitrile derivative, which is a raw material, is an asymmetric structure, phthalocyanine is obtained as a mixture of isomers each having a substituent at a different position. Hereinafter, in the present specification, only one example of the phthalocyanine structure will be shown, which does not exclude isomers each having a substituent at a different position. 
     Specific examples of the fluorescent dye, which is one embodiment of the present invention, include the following. Here, the fluorescent dye according to the present invention is not limited thereto. 
     
       
         
           
               
               
             
               
                 TABLE 1-1 
               
               
                   
               
             
            
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 1 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 2 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 3 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 4 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 5 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 6 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 7 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 8 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 9 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 10 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 11 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 12 
               
               
                   
               
            
           
         
       
     
     
       
         
           
               
               
             
               
                 TABLE 1-2 
               
               
                   
               
             
            
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 13 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 14 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 15 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 16 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 17 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 18 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 19 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 20 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 21 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 22 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 23 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 24 
               
               
                   
               
            
           
         
       
     
     
       
         
           
               
               
             
               
                 TABLE 1-3 
               
               
                   
               
             
            
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 25 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 26 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 27 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 28 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 29 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 30 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 31 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 32 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 33 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 34 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 35 
               
               
                   
               
            
           
         
       
     
     
       
         
           
               
               
             
               
                 TABLE 1-4 
               
               
                   
               
             
            
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 36 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 37 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 38 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 39 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 40 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 41 
               
               
                   
               
            
           
         
       
     
     In the above-exemplified fluorescent dyes, fluorescent dyes 1 to 37 are each a fluorescent dye having the skeleton of the phthalocyanine dye (the residue of the dye). A fluorescent dye 38 is a fluorescent dye having the skeleton of a diketopyrrolopyrrole dye. Fluorescent dyes 39 and 40 are fluorescent dyes having the skeleton of a xanthene dye. 
     A fluorescent dye 41 is a fluorescent dye having the skeleton of a boron-dipyrromethene dye (the residue of the dye). For example, in a substituent “—Z—R 1 -R 2 -R 3 ” in the fluorescent dye 41, Z is C 2 H 4 —, R 1  is —C(═O)NH—, R 2  is —C 3 H 6 —, and R 3  is —N(CH 3 ) 2 . 
     
       
         
         
             
             
         
       
     
     
       
         
           
               
               
             
               
                 TABLE 1-5 
               
               
                   
               
             
            
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 42 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 43 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 44 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 45 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 46 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 47 
               
               
                   
               
            
           
         
       
     
     
       
         
           
               
               
             
               
                 TABLE 1-6 
               
               
                   
               
             
            
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 48 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 49 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 50 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 51 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 52 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 53 
               
               
                   
               
            
           
         
       
     
     
       
         
           
               
               
             
               
                 TABLE 1-7 
               
               
                   
               
             
            
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 54 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 55 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 56 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 57 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 58 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 59 
               
               
                   
               
            
           
         
       
     
     
       
         
           
               
               
             
               
                 TABLE 1-8 
               
               
                   
               
             
            
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 60 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 61 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 62 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 63 
               
               
                   
               
            
           
         
       
     
     In the above-exemplified fluorescent dyes, fluorescent dyes 42 to 59 are each a fluorescent dye having the skeleton of the phthalocyanine dye. A fluorescent dye 60 is a fluorescent dye having the skeleton of a diketopyrrolopyrrole dye. A fluorescent dye 61 is a fluorescent dye having the skeleton of a xanthene dye. A fluorescent dye 62 is a fluorescent dye having the skeleton of a cyanine dye. A fluorescent dye 63 is a fluorescent dye having the skeleton of a boron-dipyrromethene dye. 
     While not particularly limited, in one embodiment, the fluorescent labeling agent preferably contains a fluorescent dye having the skeleton of the phthalocyanine dye from the viewpoint of stability such as durability. 
     EXAMPLES 
     Hereinafter, the present invention will be described based on examples, but the present invention is not limited by the examples. “Parts” in the examples indicates “parts by mass”. 
     (Mass analysis) 
     Masses were analyzed with a mass analyzer (TOF-MS: autoflex 11 manufactured by Bruker Daltonics). 
     &lt;I&gt; Fluorescent Dye 
     Manufacturing Example 1 
     &lt;Manufacturing method of compound A-1&gt; 
     An ammonia gas was introduced into a solution of 50 parts of quinoline and 1 part of anhydrous aluminum chloride, furthermore, 5 parts of 3-ethoxyphthalonitrile was added thereto, and these components were reacted at 180° C. for seven hours. This reaction liquid is cooled to room temperature, and then 200 parts of methanol and 200 parts of a 10% hydrochloric acid aqueous solution were added thereto. Next, a precipitated solid was filtered, and the solid was washed with 200 parts of water. The washed solid was dried at 80° C., thereby obtaining 4.7 parts of a compound A-1 shown in Table 2 (yield: 88.4%). 
     Manufacturing Examples 2 to 11 
     &lt;Manufacturing Methods of Compounds A-2 to A-10&gt; 
     Compounds A-2 to A-10 shown in Table 2 were each manufactured in the same manner as in the manufacturing of the compound A-1 except that 3-ethoxyphthalonitrile and anhydrous aluminum chloride used in the manufacturing method of the compound A-1 were changed to a phthalonitrile derivative and a metal source shown in Table 2. The phthalonitrile derivative and the metal source were used in the same molar quantities as those of 3-ethoxyphthalonitrile and anhydrous aluminum chloride in the manufacturing of the compound A-1, respectively. 
     
       
         
           
               
               
               
               
             
               
                 TABLE 2-1 
               
               
                   
               
               
                   
                 Phthalonitrile derivative 
                 Metal source 
                 Compound A 
               
               
                   
               
             
            
               
                 Manufacturing Example 1 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 AlCl 3   
                 A-1                    
 
               
               
                   
               
               
                 Manufacturing Example 2 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 AlCl 3   
                 A-2                    
 
               
               
                   
               
               
                 Manufacturing Example 3 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 AlCl 3   
                 A-3                    
 
               
               
                   
               
               
                 Manufacturing Example 4 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 AlCl 3   
                 A-4                    
 
               
               
                   
               
               
                 Manufacturing Example 5 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 SiCl 4   
                 A-5                    
 
               
               
                   
               
            
           
         
       
     
     
       
         
           
               
               
               
               
             
               
                 TABLE 2-2 
               
               
                   
               
               
                   
                 Phthalonitrile derivative 
                 Metal source 
                 Compound A 
               
               
                   
               
             
            
               
                 Manufacturing Example 6 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 AlCl 3   
                 A-6                    
 
               
               
                   
               
               
                 Manufacturing Example 7 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 AlCl 3   
                 A-7                    
 
               
               
                   
               
               
                 Manufacturing Example 8 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 AlCl 3   
                 A-8                    
 
               
               
                   
               
               
                 Manufacturing Example 9 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 AlCl 3   
                 A-9                    
 
               
               
                   
               
               
                 Manufacturing Example 10 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 AlCl 3   
                 A-10                    
 
               
               
                   
               
            
           
         
       
     
     Manufacturing Example 11 
     &lt;Manufacturing Method of Compound B-1&gt; 
     An aqueous solution obtained by dissolving 0.45 parts of potassium hydroxide in 1 part of water was fully added to a solution obtained by dissolving 3 parts of the compound A-1 in 10 parts of N-methyl-2-pyrrolidone (NMP). These components were reacted at 110° C. for seven hours. This reaction liquid is cooled to room temperature, and then 100 parts of water was added thereto. Next, a precipitated solid was filtered, and the solid was washed with 100 parts of water. The washed solid was dried at 80° C., thereby obtaining 2.9 parts of a compound B-1 shown in Table 3 (yield: 99.2%). 
     Manufacturing Examples 12 to 15 
     &lt;Manufacturing Methods of Compounds B-2 to B-5&gt; 
     Compounds B-2 to B-5 shown in Table 3 were each manufactured in the same manner as in the manufacturing of the compound B-1 except that the compound A-1 used in the manufacturing method of the compound B-1 was changed to a compound A shown in Table 3. The compound A was used in the same molar quantity as that of the compound A-1 in the manufacturing of the compound B-1. 
     
       
         
           
               
               
               
             
               
                 TABLE 3 
               
               
                   
               
               
                   
                 Compound A 
                 Compound B 
               
               
                   
               
             
            
               
                 Manufacturing Example 11 
                 A-1 
                 B-1                    
 
               
               
                   
               
               
                 Manufacturing Example 12 
                 A-2 
                 B-2                    
 
               
               
                   
               
               
                 Manufacturing Example 13  
                 A-3 
                 B-3                    
 
               
               
                   
               
               
                   
               
               
                 Manufacturing Example 14 
                 A-4 
                 B-4                    
 
               
               
                   
               
               
                 Manufacturing Example 15 
                 A-5 
                 B-5                    
 
               
               
                   
               
            
           
         
       
     
     Manufacturing Example 16 
     &lt;Manufacturing Method of Compound C-1&gt; 
     An ammonia gas was introduced into a solution of 50 parts of quinoline and 1 part of anhydrous aluminum chloride, and, furthermore, 3.8 parts of 3-ethoxyplithalonitrile and 1.1 parts of 4-fluoroplithalonitrile were added thereto. These components were reacted at 180° C. for seven hours. This reaction liquid is cooled to room temperature, and then 200 parts of methanol and 200 parts of a 10% hydrochloric acid aqueous solution were added thereto. Next, a precipitated solid was filtered, and the solid was washed with 200 parts of water. The washed solid (crude product) was purified using medium-pressure liquid chromatography (Smart Flash AKROS manufactured by Yamazen Corporation). The obtained purified product was dried at 80° C., thereby obtaining 1.6 parts of a compound C-1 shown in Table 4 (yield: 30.5%). 
     Manufacturing Examples 17 to 19 
     &lt;Manufacturing Methods of Compounds C-2 to C-4&gt; 
     Compounds C-2 to C-4 shown in Table 4 were each manufactured in the same manner as in the manufacturing of the compound C-1 except that anhydrous aluminum chloride used in the manufacturing method of the compound C-1 was changed to a metal source shown in Table 4. The metal source was used in the same molar quantity as that of anhydrous aluminum chloride in the manufacturing of the compound C-1. 
     
       
         
           
               
               
               
             
               
                 TABLE 4 
               
               
                   
               
               
                   
                 Metal source 
                 Compound C 
               
               
                   
               
             
            
               
                 Manufacturing Example 16 
                 AlCl 3   
                 
                   
                     
                     
                         
                         
                     
                   
                 
               
               
                   
               
               
                 Manufacturing Example 17 
                 SiCl 4   
                 
                   
                     
                     
                         
                         
                     
                   
                 
               
               
                   
               
               
                 Manufacturing Example 18 
                 MgCl 2   
                 
                   
                     
                     
                         
                         
                     
                   
                 
               
               
                   
               
               
                 Manufacturing Example 19 
                 ZnCl 2   
                 
                   
                     
                     
                         
                         
                     
                   
                 
               
               
                   
               
            
           
         
       
     
     Example 1 
     &lt;Manufacturing Method of Fluorescent Dye 1&gt; 
     One part of the compound B-1 and 0.6 parts of 3-aminopropyldimethylethoxysilane were dissolved in pyridine, and this solution was refluxed at 115° C. for three hours to obtain a reaction liquid. After pyridine was removed from the reaction liquid using an evaporator, a mixed solution of 10 parts of ethanol and 50 parts of water was added thereto. Next, a precipitated solid was filtered, and the solid was washed with 50 parts of water. The washed solid was dried at 80° C., thereby obtaining 0.39 parts of a fluorescent dye 1 shown in Table 1 (yield: 33.7%). As a result of a mass analysis, a molecular ion peak was detected at m/z=848.64 (theoretical value: 847.99), and it was identified that the fluorescent dye had the structure of the fluorescent dye 1 shown in Table 1. 
     Examples 2 to 5 
     &lt;Manufacturing Methods of Fluorescent Dyes 2 to 5&gt; 
     Fluorescent dyes 2 to 5 shown in Table 1 were each manufactured in the same manner as in the manufacturing of the fluorescent dye 1 except that the compound B-1 used in the manufacturing method of the fluorescent dye 1 was changed to a compound B shown in Table 5. The compound B was used in the same molar quantity as that of the compound B-1 in the manufacturing of the fluorescent dye 1. The structures of the obtained fluorescent dyes 2 to 5 were identified by mass analyses, and it was confirmed that the fluorescent dyes had a structure shown in Table 1. Table 11 shows the analysis results of mass spectra. 
     
       
         
           
               
               
               
             
               
                   
                 TABLE 5 
               
               
                   
                   
               
               
                   
                 Fluorescent dye 
                 Compound B 
               
               
                   
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
            
               
                   
                 Example 1 
                 Fluorescent dye 1 
                 B-1 
               
               
                   
                 Example 2 
                 Fluorescent dye 2 
                 B-2 
               
               
                   
                 Example 3 
                 Fluorescent dye 3 
                 B-3 
               
               
                   
                 Example 4 
                 Fluorescent dye 4 
                 B-4 
               
               
                   
                 Example 5 
                 Fluorescent dye 5 
                 B-5 
               
               
                   
                   
               
            
           
         
       
     
     Example 6 
     &lt;Manufacturing Method of Fluorescent Dye 6&gt; 
     0.7 Parts of the compound A-1 and 0.4 parts of 4-(3-aminopropyl)benzenesulfonic acid were dissolved in 50 parts of dimethyl sulfoxide, furthermore, 0.3 parts of 1,8-diazabicyclo[5.4.0]-7-undecene was added thereto, and these components were reacted at 90° C. for five hours. This reaction liquid is cooled to room temperature, and then 100 parts of water and 10 parts of common salt were added thereto. Next, a precipitated solid was filtered, and the solid was washed with 50 parts of water. The washed solid was dried at 80° C., thereby obtaining 0.36 parts of a fluorescent dye 6 shown in Table 1 (yield: 41.6%). As a result of a mass analysis, a molecular ion peak was detected at m/z=916.57 (theoretical value: 915.96), and it was identified that the fluorescent dye had the structure of the fluorescent dye 6 shown in Table 1. 
     Examples 7 to 14 
     &lt;Manufacturing Methods of Fluorescent Dyes 7 to 14&gt; 
     Fluorescent dyes 7 to 14 shown in Table 1 were each manufactured in the same manner as in the manufacturing of the fluorescent dye 6 except that the compound A-1 and 4-(3-aminopropyl)benzenesulfonic acid used in the manufacturing method of the fluorescent dye 6 were changed to a compound A and an acidic compound shown in Table 6. The compound A and the acidic compound were used in the same molar quantities as those of the compound A-1 and 4-(3-aminopropyl)benzenesulfonic acid in the manufacturing of the fluorescent dye 6, respectively. The structures of the obtained fluorescent dyes 7 to 14 were identified by mass analyses, and it was confirmed that the fluorescent dyes had a structure shown in Table 1. Table 11 shows the analysis results of mass spectra. 
     
       
         
           
               
               
               
               
             
               
                 TABLE 6 
               
               
                   
               
               
                   
                 Fluorescent dye 
                 Compound A 
                 Acidic compound 
               
               
                   
               
             
            
               
                 Example 6 
                 Fluorescent dye 6 
                 A-1 
                 
                   
                     
                     
                         
                         
                     
                   
                 
               
               
                   
               
               
                 Example 7 
                 Fluorescent dye 7 
                 A-6 
                 
                   
                     
                     
                         
                         
                     
                   
                 
               
               
                   
               
               
                 Example 8 
                 Fluorescent dye 8 
                 A-7 
                 
                   
                     
                     
                         
                         
                     
                   
                 
               
               
                   
               
               
                 Example 9 
                 Fluorescent dye 9 
                 A-8 
                 
                   
                     
                     
                         
                         
                     
                   
                 
               
               
                   
               
               
                 Example 10 
                 Fluorescent dye 10 
                 A-1 
                 
                   
                     
                     
                         
                         
                     
                   
                 
               
               
                   
               
               
                 Example 11 
                 Fluorescent dye 11 
                 A-1 
                 
                   
                     
                     
                         
                         
                     
                   
                 
               
               
                   
               
               
                 Example 12 
                 Fluorescent dye 12 
                 A-9 
                 
                   
                     
                     
                         
                         
                     
                   
                 
               
               
                   
               
               
                 Example 13 
                 Fluorescent dye 13 
                 A-10 
                 
                   
                     
                     
                         
                         
                     
                   
                 
               
               
                   
               
               
                 Example 14 
                 Fluorescent dye 14 
                 A-1 
                 
                   
                     
                     
                         
                         
                     
                   
                 
               
               
                   
               
            
           
         
       
     
     Example 15 
     &lt;Manufacturing Method of Fluorescent Dye 15&gt; 
     0.5 Parts of the compound A-1 and 0.29 parts of (2-carboxyethyl)phenylphosphinic acid were dissolved in 20 parts of dimethyl sulfoxide, and this solution was reacted at 80° C. for eight hours. This reaction liquid is cooled to room temperature, and then 50 parts of water and 10 parts of common salt were added thereto. Next, a precipitated solid was filtered, and the solid was washed with 50 parts of water. The washed solid was dried at 80° C., thereby obtaining 0.46 parts of a fluorescent dye 15 shown in Table 1 (yield: 74.4%). As a result of a mass analysis, a molecular ion peak was detected at m/z=929.46 (theoretical value: 928.88), and it was identified that the fluorescent dye had the structure of the fluorescent dye 15 shown in Table 1. 
     Examples 16 to 18 
     &lt;Manufacturing Methods of Fluorescent Dyes 16 to 18&gt; 
     Fluorescent dyes 16 to 18 shown in Table 1 were each manufactured in the same manner as in the manufacturing of the fluorescent dye 15 except that the compound A-1 and (2-carboxyethyl)phenylphosphinic acid used in the manufacturing method of the fluorescent dye 15 were changed to a compound A and an acidic compound shown in Table 7. The compound A and the acidic compound were used in the same molar quantities as those of the compound A-1 and (2-carboxyethyl)phenylphosphinic acid in the manufacturing of the fluorescent dye 15, respectively. The structures of the obtained fluorescent dyes 16 to 18 were identified by mass analyses, and it was confirmed that the fluorescent dyes had a structure shown in Table 1. Table 11 shows the analysis results of mass spectra. 
     
       
         
           
               
               
               
               
             
               
                 TABLE 7 
               
               
                   
               
               
                   
                   
                   
                 Acidic 
               
               
                   
                 Fluorescent dye 
                 Compound A 
                 compound 
               
               
                   
               
             
            
               
                 Example 15 
                 Fluorescent dye 15 
                 A-1 
                 
                   
                     
                     
                         
                         
                     
                   
                 
               
               
                   
               
               
                 Example 16 
                 Fluorescent dye 16 
                 A-5 
                 
                   
                     
                     
                         
                         
                     
                   
                 
               
               
                   
               
               
                 Example 17 
                 Fluorescent dye 17 
                 A-1 
                 
                   
                     
                     
                         
                         
                     
                   
                 
               
               
                   
               
               
                 Example 18 
                 Fluorescent dye 18 
                 A-1 
                 
                   
                     
                     
                         
                         
                     
                   
                 
               
               
                   
               
            
           
         
       
     
     Example 19 
     &lt;Manufacturing Method of Fluorescent Dye 19&gt; 
     0.5 Parts of the fluorescent dye 1, 0.8 parts of methyl iodide, and 0.8 parts of potassium carbonate were dissolved in 50 parts of tetrahydrofuran, and this solution was reacted at 25° C. for five hours. After tetrahydrofuran was removed from the reaction liquid using an evaporator, 20 parts of tetrahydrofuran and 60 parts of water were added thereto. Next, a precipitated solid was filtered, and the solid was washed with 60 parts of water. The washed solid was dried at 80° C., thereby obtaining 0.21 parts of a fluorescent dye 19 shown in Table 1 (yield: 33.3%). As a result of a mass analysis, a molecular ion peak was detected at m/z (positive)=892.25 (theoretical value: 891.08), and it was identified that the fluorescent dye had the structure of the fluorescent dye 19 shown in Table 1. 
     Examples 20 to 23 
     &lt;Manufacturing Methods of Fluorescent Dyes 20 to 23&gt; 
     Fluorescent dyes 20 to 23 shown in Table 1 were each manufactured in the same manner as in the manufacturing of the fluorescent dye 19 except that methyl iodide and the fluorescent dye 1 used in the manufacturing method of the fluorescent dye 19 were changed to an iodized compound and an amine shown in Table 8. The iodized compound and the amine were used in the same molar quantities as those of methyl iodide and the fluorescent dye 1 in the manufacturing of the fluorescent dye 19, respectively. The structures of the obtained fluorescent dyes 20 to 23 were identified by mass analyses, and it was confirmed that the fluorescent dyes had a structure shown in Table 1. Table 11 shows the analysis results of mass spectra. 
     
       
         
           
               
               
               
               
             
               
                 TABLE 8 
               
               
                   
               
               
                   
                   
                 Iodized 
                   
               
               
                   
                 Fluorescent dye 
                 compound 
                 Amines 
               
               
                   
               
             
            
               
                 Example 19 
                 Fluorescent dye 
                 CH 3 I 
                 Fluorescent dye 
               
               
                   
                 19 
                   
                 1 
               
               
                 Example 20 
                 Fluorescent dye 
                 C 2 H 4 I 
                 Fluorescent dye 
               
               
                   
                 20 
                   
                 2 
               
               
                   
               
               
                 Example 21 
                 Fluorescent dye 21 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 3 
               
               
                   
               
               
                 Example 22 
                 Fluorescent dye 
                 C 18 H 37 I 
                 Fluorescent dye 
               
               
                   
                 22 
                   
                 4 
               
               
                 Example 23 
                 Fluorescent dye 
                 CH 3 I 
                 Fluorescent dye 
               
               
                   
                 23 
                   
                 5 
               
               
                   
               
            
           
         
       
     
     Example 24 
     &lt;Manufacturing Method of Fluorescent Dye 24&gt; 
     0.06 Parts of the fluorescent dye 1 and 0.007 parts of succinic anhydride were dissolved in 5 parts of N-methyl-2-pyrrolidone (NMP), and this solution was reacted at 90° C. for four hours. After NMP was removed from the reaction liquid using a centrifugal evaporator, 5 parts of water was added thereto. Next, a precipitated solid was filtered, and the solid was washed with 5 parts of water. The washed solid was dried at 80° C., thereby obtaining 0.041 parts of a fluorescent dye 24 shown in Table 1 (yield: 61.1%). As a result of a mass analysis, a molecular ion peak was detected at /z=949.07 (theoretical value: 948.06), and it was identified that the fluorescent dye had the structure of the fluorescent dye 24 shown in Table 1. 
     Examples 25 to 30 
     &lt;Manufacturing Methods of Fluorescent Dyes 25 to 30&gt; 
     Fluorescent dyes 25 to 30 shown in Table 1 were each manufactured in the same manner as in the manufacturing of the fluorescent dye 24 except that succinic anhydride and the fluorescent dye 1 used in the manufacturing method of the fluorescent dye 24 were changed to a succinic anhydride derivative and an amine shown in Table 9. The succinic anhydride derivative and the amine were used in the same molar quantities as those of succinic anhydride and the fluorescent dye 1 in the manufacturing of the fluorescent dye 24, respectively. The structures of the obtained fluorescent dyes 25 to 30 were identified by mass analyses, and it was confirmed that the fluorescent dyes had a structure shown in Table 1. Table 11 shows the analysis results of mass spectra. 
     
       
         
           
               
               
               
               
             
               
                 TABLE 9 
               
               
                   
               
               
                   
                   
                 Succinic anhydride 
                   
               
               
                   
                 Fluorescent dye 
                 derivative 
                 Amines 
               
               
                   
               
             
            
               
                 Example 24 
                 Fluorescent dye 24 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 1 
               
               
                   
               
               
                 Example 25 
                 Fluorescent dye 25 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 1 
               
               
                   
               
               
                 Example 26 
                 Fluorescent dye 26 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 6 
               
               
                   
               
               
                 Example 27 
                 Fluorescent dye 27 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 7 
               
               
                   
               
               
                 Example 28 
                 Fluorescent dye 28 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 8 
               
               
                   
               
               
                 Example 29 
                 Fluorescent dye 29 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 9 
               
               
                   
               
               
                 Example 30 
                 Fluorescent dye 30 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Fluorescent dye 10 
               
               
                   
               
            
           
         
       
     
     Example 31 
     &lt;Manufacturing Method of Fluorescent Dye 31&gt; 
     1.0 Part of the compound C-1 and 0.6 parts of (2-carboxyethyl)phenylphosphinic acid were dissolved in 50 parts of dimethyl sulfoxide, furthermore, 0.4 parts of 1,8-diazabicyclo[5.4.0]-7-undecene was added thereto, and then this solution was reacted at 90° C. for eight hours. This reaction liquid is cooled to room temperature, and then 100 parts of water was added thereto. Next, a precipitated solid was filtered, and the solid was washed with 50 parts of water. The obtained solid (crude product) was purified using medium-pressure liquid chromatography (Smart Flash AKROS manufactured by Yamazen Corporation). The obtained purified product was dried at 80° C., thereby obtaining 0.72 parts of a fluorescent dye 31 shown in Table 1 (yield: 60.1%). As a result of a mass analysis, a molecular ion peak was detected at m/z=901.46 (theoretical value: 900.82), and it was identified that the fluorescent dye had the structure of the fluorescent dye 31 shown in Table 1. 
     Examples 32 to 37 
     &lt;Manufacturing Methods of Fluorescent Dyes 32 to 37&gt; 
     Fluorescent dyes 32 to 37 shown in Table 1 were each manufactured in the same manner as in the manufacturing of the fluorescent dye 31 except that the compound C-1 and (2-carboxyethyl)phenylphosphinic acid used in the manufacturing method of the fluorescent dye 31 were changed to a compound C and an acidic compound shown in Table 10. The compound C and the acidic compound were used in the same molar quantities as those of the compound C-1 and (2-carboxyethyl)phenylphosphinic acid in the manufacturing of the fluorescent dye 31, respectively. The structures of the obtained fluorescent dyes 32 to 37 were identified by mass analyses, and it was confirmed that the fluorescent dyes had a structure shown in Table 1. Table 11 shows the analysis results of mass spectra. 
     
       
         
           
               
               
               
               
             
               
                 TABLE 10 
               
               
                   
               
               
                   
                   
                   
                 Acidic 
               
               
                   
                 Fluorescent dye 
                 Comound C 
                 compound 
               
               
                   
               
             
            
               
                 Example 31 
                 Fluorescent dye 31 
                 C-1 
                 
                   
                     
                     
                         
                         
                     
                   
                 
               
               
                   
               
               
                 Example 32 
                 Fluorescent dye 32 
                 C-1 
                 
                   
                     
                     
                         
                         
                     
                   
                 
               
               
                   
               
               
                 Example 33 
                 Fluorescent dye 33 
                 C-1 
                 
                   
                     
                     
                         
                         
                     
                   
                 
               
               
                   
               
               
                 Example 34 
                 Fluorescent dye 34 
                 C-2 
                 
                   
                     
                     
                         
                         
                     
                   
                 
               
               
                   
               
               
                 Example 35 
                 Fluorescent dye 35 
                 C-1 
                 
                   
                     
                     
                         
                         
                     
                   
                 
               
               
                   
               
               
                 Example 36 
                 Fluorescent dye 36 
                 C-3 
                 
                   
                     
                     
                         
                         
                     
                   
                 
               
               
                   
               
               
                 Example 37 
                 Fluorescent dye 37 
                 C-4 
                 
                   
                     
                     
                         
                         
                     
                   
                 
               
               
                   
               
            
           
         
       
     
     Example 38 
     &lt;Manufacturing Method of Fluorescent Dye 38&gt; 
     1.0 Part of Pigment RED 255, which is a diketopyrrolopyrrole-based dye, (manufactured by Tokyo Chemical Industry Co., Ltd.), 0.6 parts of 4-bromobutyric acid, and 0.1 parts of sodium hydroxide (60%) were dissolved in 50 parts of N,N-dimethyl formamide, and this solution was reacted at 90° C. for four hours. This reaction liquid is cooled to room temperature, and then 100 parts of water was added thereto. Next, a precipitated solid was filtered, and the solid was washed with 50 parts of water. The washed solid (crude product) was purified using medium-pressure liquid chromatography (Smart Flash AKROS manufactured by Yamazen Corporation). The obtained purified product was dried at 80° C., thereby obtaining 0.70 parts of a fluorescent dye 38 shown in Table 1 (yield: 53.9%). As a result of a mass analysis, a molecular ion peak was detected at m/z=375.28 (theoretical value: 374.40), and it was identified that the fluorescent dye had the structure of the fluorescent dye 38 shown in Table 1. 
     Example 39 
     &lt;Manufacturing Method of Fluorescent Dye 39&gt; 
     1.0 Part of 5-carboxyfluorescein (manufactured by Tokyo Chemical Industry Co., Ltd.), 0.3 parts of N,N-dimethyl-1,3-propanediamine, and 0.1 parts of para-toluenesulfonic acid were dissolved in 50 parts of xylene, and this solution was reacted at 140° C. for 24 hours. After this reaction liquid was cooled to room temperature, xylene was removed from the reaction liquid using an evaporator, and 50 parts of a petroleum ether was added thereto. Next, an insoluble matter was removed by suction filtration, and then the petroleum ether was removed using an evaporator, thereby obtaining a solid. This solid was dried at 80° C., thereby obtaining 0.57 parts of a fluorescent dye 39 shown in Table 1 (yield: 46.6%). As a result of a mass analysis, a molecular ion peak was detected at m/z=461.37 (theoretical value: 460.49), and it was identified that the fluorescent dye had the structure of the fluorescent dye 39 shown in Table 1. 
     Example 40 
     &lt;Manufacturing Method of Fluorescent Dye 40&gt; 
     1.0 Part of Rhodamin B (manufactured by Tokyo Chemical Industry Co., Ltd.), 0.2 parts of N,N-dimethyl-1,3-propanediamine, and 0.1 parts of para-toluenesulfonic acid were dissolved in 50 parts of xylene, and this solution was reacted at 140° C. for 24 hours. After this reaction liquid was cooled to room temperature, xylene was removed from the reaction liquid using an evaporator, and 50 parts of a petroleum ether was added thereto. Next, an insoluble matter was removed by suction filtration, and then the petroleum ether was removed using an evaporator, thereby obtaining a solid. This solid was dried at 80° C., thereby obtaining 0.46 parts of a fluorescent dye 40 shown in Table 1 (yield: 39.1%). As a result of a mass analysis, a molecular ion peak was detected at m/z=564.02 (theoretical value: 563.18), and it was identified that the fluorescent dye had the structure of the fluorescent dye 40 shown in Table 1. 
     Example 41 
     &lt;Manufacturing Method of Fluorescent Dye 41&gt; 
     1.0 Part of BDPFL, which is a BODIPY-based dye, (manufactured by Tokyo Chemical Industry Co., Ltd.) and 0.3 parts of N,N-dimethyl-1,3-propanediamine were dissolved in 50 parts of xylene, and this solution was reacted at 140° C. for 24 hours. After this reaction liquid was cooled to room temperature, xylene was removed from the reaction liquid using an evaporator, and 50 parts of a petroleum ether was added thereto. Next, an insoluble matter was removed by suction filtration, and then the petroleum ether was removed using an evaporator, thereby obtaining a solid. This solid was dried at 80° C., thereby obtaining 0.38 parts of a fluorescent dye 41 shown in Table 1 (yield: 29.3%). As a result of a mass analysis, a molecular ion peak was detected at m/z=379.11 (theoretical value: 378.27), and it was identified that the fluorescent dye had the structure of the fluorescent dye 41 shown in Table 1. 
     
       
         
           
               
               
               
             
               
                   
                 TABLE 11 
               
               
                   
                   
               
               
                   
                 Theoretical value 
                 Measurement value 
               
               
                   
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
            
               
                   
                 Fluorescent dye 1 
                 847.99 
                 848.64 
               
               
                   
                 Fluorescent dye 2 
                 976.17 
                 976.98 
               
               
                   
                 Fluorescent dye 3 
                 1328.94 
                 1329.51 
               
               
                   
                 Fluorescent dye 4 
                 1104.41 
                 1105.66 
               
               
                   
                 Fluorescent dye 5 
                 866.10 
                 867.34 
               
               
                   
                 Fluorescent dye 6 
                 915.96 
                 916.57 
               
               
                   
                 Fluorescent dye 7 
                 1011.74 
                 1012.79 
               
               
                   
                 Fluorescent dye 8 
                 1749.69 
                 1750.47 
               
               
                   
                 Fluorescent dye 9 
                 964.18 
                 965.32 
               
               
                   
                 Fluorescent dye 10 
                 817.84 
                 818.46 
               
               
                   
                 Fluorescent dye 11 
                 880.85 
                 880.67 
               
               
                   
                 Fluorescent dye 12 
                 1207.48 
                 1208.41 
               
               
                   
                 Fluorescent dye 13 
                 1075.05 
                 1075.94 
               
               
                   
                 Fluorescent dye 14 
                 831.87 
                 832.76 
               
               
                   
                 Fluorescent dye 15 
                 928.88 
                 929.46 
               
               
                   
                 Fluorescent dye 16 
                 946.99 
                 947.99 
               
               
                   
                 Fluorescent dye 17 
                 868.78 
                 869.74 
               
               
                   
                 Fluorescent dye 18 
                 944.88 
                 945.61 
               
               
                   
                 Fluorescent dye 19 
                 891.08 
                 892.25 
               
               
                   
                 Fluorescent dye 20 
                 1061.34 
                 1062.57 
               
               
                   
                 Fluorescent dye 21 
                 1558.24 
                 1559.08 
               
               
                   
                 Fluorescent dye 22 
                 1862.87 
                 1863.71 
               
               
                   
                 Fluorescent dye 23 
                 909.19 
                 909.89 
               
               
                   
                 Fluorescent dye 24 
                 948.06 
                 949.07 
               
               
                   
                 Fluorescent dye 25 
                 1200.55 
                 1201.47 
               
               
                   
                 Fluorescent dye 26 
                 1016.03 
                 1017.08 
               
               
                   
                 Fluorescent dye 27 
                 1183.78 
                 1184.55 
               
               
                   
                 Fluorescent dye 28 
                 1907.80 
                 1908.78 
               
               
                   
                 Fluorescent dye 29 
                 1106.34 
                 1107.22 
               
               
                   
                 Fluorescent dye 30 
                 917.92 
                 918.97 
               
               
                   
                 Fluorescent dye 31 
                 900.82 
                 901.46 
               
               
                   
                 Fluorescent dye 32 
                 852.78 
                 853.63 
               
               
                   
                 Fluorescent dye 33 
                 882.81 
                 883.75 
               
               
                   
                 Fluorescent dye 34 
                 918.93 
                 919.61 
               
               
                   
                 Fluorescent dye 35 
                 924.91 
                 925.30 
               
               
                   
                 Fluorescent dye 36 
                 882.25 
                 883.10 
               
               
                   
                 Fluorescent dye 37 
                 923.33 
                 924.46 
               
               
                   
                 Fluorescent dye 38 
                 374.40 
                 375.28 
               
               
                   
                 Fluorescent dye 39 
                 460.49 
                 461.37 
               
               
                   
                 Fluorescent dye 40 
                 563.18 
                 564.02 
               
               
                   
                 Fluorescent dye 41 
                 378.27 
                 379.11 
               
               
                   
                   
               
            
           
         
       
     
     Manufacturing Example 20 
     &lt;Manufacturing Method of Compound A-11&gt; 
     An ammonia gas was introduced into a solution of 50 parts of quinoline and 1 part of anhydrous aluminum chloride, furthermore, 5 parts of 3,6-bis(phenylthio)phthalonitrile was added thereto, and these components were reacted at 180° C. for seven hours. This reaction liquid is cooled to room temperature, and then 200 parts of methanol and 200 parts of a 10% hydrochloric acid aqueous solution were added thereto. Next, a precipitated solid was filtered, and the solid was washed with 200 parts of water. The washed solid was dried at 80° C., thereby obtaining a compound A-11 shown in Table 12 (yield: 72.8%). 
     Manufacturing Examples 21 and 22 
     &lt;Manufacturing Methods of Compounds A-12 and A-13&gt; 
     Compounds A-12 and A-13 shown in Table 12 were each manufactured in the same manner as in the manufacturing of the compound A-11 except that 3,6-bis(phenylthio)phthalonitrile used in the manufacturing method of the compound A-11 was changed to a phthalonitrile derivative shown in Table 12. The phthalonitrile derivative was used in the same molar quantity as that of 3,6-bis(phenylthio)phthalonitrile in the manufacturing of the compound A-11. 
     
       
         
           
               
               
               
             
               
                 TABLE 12 
               
               
                   
               
               
                   
                 Phthalonitrile 
                   
               
               
                   
                 derivative 
                 Compound A 
               
               
                   
               
             
            
               
                 Manufacturing Example 20 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 
                   
                     
                     
                         
                         
                     
                   
                 
               
               
                   
               
               
                 Manufacturing Example 21 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 
                   
                     
                     
                         
                         
                     
                   
                 
               
               
                   
               
               
                 Manufacturing Example 22 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 
                   
                     
                     
                         
                         
                     
                   
                 
               
               
                   
               
            
           
         
       
     
     Example 42 
     &lt;Manufacturing Method of Fluorescent Dye 42&gt; 
     0.7 Parts of the compound A-1 and 0.4 parts of 1,2-ethylenediphosphonic acid were dissolved in 50 parts of dimethyl sulfoxide, furthermore, 0.3 parts of 1,8-diazabicyclo[5.4.0]-7-undecene was added thereto, and then this solution was reacted at 90° C. for five hours. This reaction liquid is cooled to room temperature, and then 100 parts of water and 10 parts of common salt were added thereto. Next, a precipitated solid was filtered, and the solid was washed with 50 parts of water. The washed solid was dried at 80° C., thereby obtaining 0.42 parts of a fluorescent dye 1 shown in Table 1 (yield: 50.6%). As a result of a mass analysis, a molecular ion peak was detected at m/z=905.35 (theoretical value: 905.21), and it was identified that the fluorescent dye had the structure of the fluorescent dye 1 shown in Table 1. 
     Examples 43 to 55 
     &lt;Manufacturing Methods of Fluorescent Dyes 43 to 55&gt; 
     Fluorescent dyes 2 to 14 shown in Table 1 were each manufactured in the same manner as in the manufacturing of the fluorescent dye 6 except that the compound A-1 and 1,2-ethylenediphosphonic acid used in the manufacturing method of the fluorescent dye 1 were changed to a compound A and an axial ligand shown in Table 13. The compound A and the axial ligand were used in the same molar quantities as those of the compound A-1 and 1,2-ethylenediphosphonic acid in the manufacturing of the fluorescent dye 1, respectively. The structures of the obtained fluorescent dyes 2 to 14 were identified by analyses using a mass analyzer, and it was confirmed that the fluorescent dyes had a structure shown in Table 1. Table 3 showed the analysis results of mass spectra. 
     
       
         
           
               
               
               
               
               
             
               
                 TABLE 13-1 
               
               
                   
               
               
                   
                 Axial ligand 
                 Compound A 
                 Fluorescent dye 
                 MALDI-TOF-MS [M + H] +   
               
               
                   
               
             
            
               
                 Example 42 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 A-1 
                 Fluorescent dye 42 
                 Theoretical value: 905.21 Actually measured value: 905.35 
               
               
                   
               
               
                 Example 43 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 A-3 
                 Fluorescent dye 43 
                 Theoretical value: 1383.73 Actually measured value: 1383.55 
               
               
                   
               
               
                 Example 44 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 A-11 
                 Fluorescent dye 44 
                 Theoretical value: 953.35 Actually measured value: 953.00 
               
               
                   
               
               
                 Example 45 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 A-8 
                 Fluorescent dye 45 
                 Theoretical value: 1593.13 Actually measured value: 1592.98 
               
               
                   
               
               
                 Example 46 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 A-12 
                 Fluorescent dye 46 
                 Theoretical value: 1305.38 Actually measured value: 1305.57 
               
               
                   
               
            
           
         
       
     
     
       
         
           
               
               
               
               
               
             
               
                 TABLE 13-2 
               
               
                   
               
               
                   
                 Axial ligand 
                 Compound A 
                 Fluorescent dye 
                 MALDI-TOF-MS [M + H] +   
               
               
                   
               
             
            
               
                 Example 47 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 A-1 
                 Fluorescent dye 47 
                 Theoretical value: 981.24 Actually measured value: 981.02 
               
               
                   
               
               
                 Example 48 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 A-1 
                 Fluorescent dye 48 
                 Theoretical value: 961.27 Actually measured value: 961.28 
               
               
                   
               
               
                 Example 49 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 A-1 
                 Fluorescent dye 49 
                 Theoretical value: 805.30 Actually measured value: 805.11 
               
               
                   
               
               
                 Example 50 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 A-6 
                 Fluorescent dye 50 
                 Theoretical value: 901.14 Actually measured value: 901.43 
               
               
                   
               
               
                 Example 51 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 A-10 
                 Fluorescent dye 51 
                 Theoretical value: 1277.55 Actually measured value: 1277.13 
               
               
                   
               
            
           
         
       
     
     
       
         
           
               
               
               
               
               
             
               
                 TABLE 13-3 
               
               
                   
               
               
                   
                 Axial ligand 
                 Compound A 
                 Fluorescent dye 
                 MALDI-TOF-MS [M + H] +   
               
               
                   
               
             
            
               
                 Example 52 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 A-13 
                 Fluorescent dye 52 
                 Theoretical value: 1109.57 Actually measured value: 1109.83 
               
               
                   
               
               
                 Example 53 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 A-1 
                 Fluorescent dye 53 
                 Theoretical value: 889.24 Actually measured value: 889.81 
               
               
                   
               
               
                 Example 54 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 A-1 
                 Fluorescent dye 54 
                 Theoretical value: 819.28 Actually measured value: 819.83 
               
               
                   
               
               
                 Example 55 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 A-1 
                 Fluorescent dye 55 
                 Theoretical value: 889.23 Actually measured value: 889.55 
               
               
                   
               
            
           
         
       
     
     Manufacturing Example 23 
     &lt;Manufacturing of Compound D-1&gt; 
     Five parts of 4-butylthio-1,3-diiminoisoindoline and 8.8 parts of silicon tetrachloride were added to 200 parts of sulfolane and 15.7 parts of 1,8-diazabicyclo[5,4,0]-7-undecene (DBU), and these components were heated and stirred at 160° C. to 170° C. for eight hours. Next, the reaction liquid was cooled to room temperature (25° C.), and 200 parts of methanol was added thereto. Next, the precipitated deposit (solid) was filtered, the solid was washed with a mixed solution of methanol and water (mass ratio=4:1) and then dried, thereby obtaining 2.6 parts of a compound D-1 shown in Table 14 (yield: 63.6%). As a result of a mass analysis, a molecular ion peak was detected at m/z=751.65 (theoretical value: 751.24), and it was confirmed that the compound had the structure of the compound D-1 shown in Table 14. 
     
       
         
           
               
               
               
             
               
                 TABLE 14 
               
               
                   
               
               
                   
                 Isoindoline derivative 
                 Compound D 
               
               
                   
               
             
            
               
                 Manufacturing Example 23 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 
                   
                     
                     
                         
                         
                     
                   
                 
               
               
                   
               
            
           
         
       
     
     Example 56 
     &lt;Manufacturing Method of Fluorescent Dye 56&gt; 
     1.0 Part of the compound B-5 and 0.5 parts of 1,2-ethylenediphosphonic acid were dissolved in 50 parts of dimethyl sulfoxide, furthermore, 0.3 parts of 1,8-diazabicyclo[5.4.0]-7-undecene was added thereto, and these were reacted at 90° C. for five hours. This reaction liquid is cooled to room temperature, and then 100 parts of water and 10 parts of common salt were added thereto. Next, a precipitated solid was filtered, and the solid was washed with 50 parts of water. The washed solid was dried at 80° C., thereby obtaining 0.52 parts of a fluorescent dye 1 shown in Table 1 (yield: 42.3%). As a result of a mass analysis, a molecular ion peak was detected at m/z=923.47 (theoretical value: 923.21), and it was identified that the fluorescent dye had the structure of the fluorescent dye 56 shown in Table 1. 
     Manufacturing Example 57 
     &lt;Manufacturing Method of Fluorescent Dye 57&gt; 
     A fluorescent dye 57 shown in Table 1 was manufactured in the same manner as in the manufacturing of the fluorescent dye 56 except that the compound B-5 used in the manufacturing method of the fluorescent dye 1 was changed to D-1. The compound D-1 was used in the same molar quantity as that of the compound B-5 in the manufacturing of the fluorescent dye 56. The structure of the obtained fluorescent dye 57 was identified by analyses using a mass analyzer, and it was confirmed that the fluorescent dyes had a structure shown in Table 1. Table 15 showed the analysis results of mass spectra. 
     
       
         
           
               
               
               
               
               
             
               
                 TABLE 15 
               
               
                   
               
               
                   
                   
                 Compound B 
                   
                   
               
               
                   
                 Axial ligand 
                 or D 
                 Fluorescent dye 
                 MALDI-TOF-MS[M + H] +   
               
               
                   
               
             
            
               
                 Example 56 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 B-5 
                 Fluorescent dye 56 
                 Theoretical value: 923.21 Actually measured value: 923.47 
               
               
                   
               
               
                 Example 57 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 D-1 
                 Fluorescent dye 57 
                 Theoretical value: 1099.24 Actually measured value: 1099.85 
               
               
                   
               
            
           
         
       
     
     Example 58 
     &lt;Manufacturing Method of Fluorescent Dye 58&gt; 
     0.7 Parts of the compound C-3 and 0.7 parts of 1,2-hexylenediphosphonic acid were dissolved in 50 parts of dimethyl sulfoxide, furthermore, 0.3 parts of 1,8-diazabicyclo[5.4.0]-7-undecene was added to this solution, and these were reacted at 90° C. for five hours. This reaction liquid is cooled to room temperature, and then 100 parts of water and 10 parts of common salt were added thereto. Next, a precipitated solid was filtered, and the solid was washed with 50 parts of water. The washed solid was dried at 80° C., thereby obtaining 0.39 parts of a fluorescent dye 1 shown in Table 1 (yield: 42.3%). As a result of a mass analysis, a molecular ion peak was detected at m/z=913.66 (theoretical value: 913.24), and it was identified that the fluorescent dye had the structure of the fluorescent dye 58 shown in Table 1. 
     Example 59 
     &lt;Manufacturing Method of Fluorescent Dye 59&gt; 
     A fluorescent dye 59 shown in Table 1 was manufactured in the same manner as in the manufacturing of the fluorescent dye 58 except that the compound C-3 and 1,2-hexylenediphosphonic acid used in the manufacturing method of the fluorescent dye 58 were changed to a compound C-4 and a ring substituent shown in Table 16. The compound C-4 was used in the same molar quantity as that of the compound C-3 in the manufacturing of the fluorescent dye 17. The structure of the obtained fluorescent dye 59 was identified by analyses using a mass analyzer, and it was confirmed that the fluorescent dyes had a structure shown in Table 1. Table 16 showed the analysis results of mass spectra. 
     
       
         
           
               
               
               
               
               
             
               
                 TABLE 16 
               
               
                   
               
               
                   
                 Ring 
                 Compound 
                   
                   
               
               
                   
                 substituent 
                 B 
                 Fluorescent dye 
                 MALDI-TOF-MS[M + H] +   
               
               
                   
               
             
            
               
                 Example 58 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 C-3 
                 Fluorescent dye 58 
                 Theoretical value: 913.24 Actually measured value: 913.66 
               
               
                   
               
               
                 Example 59 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 C-4 
                 Fluorescent dye 59 
                 Theoretical value: 797.21 Actually measured value: 797.18 
               
               
                   
               
            
           
         
       
     
     Example 60 
     &lt;Manufacturing Method of Fluorescent Dye 60&gt; 
     1.0 Part of Pigment RED 255, which is a diketopyrrolopyrrole-based dye, (Tokyo Chemical Industry Co., Ltd.), 0.6 parts of 3-aminopropylphosphonic acid, and 0.1 parts of sodium hydroxide (60% dispersion) were dissolved in 50 parts of N,N-dimethyl formamide, and this solution was reacted at 90° C. for four hours. This reaction liquid is cooled to room temperature, and then 100 parts of water was added thereto. Next, a precipitated solid was filtered, and the solid was washed with 50 parts of water. The washed solid (crude product) was purified using medium-pressure liquid chromatography (Smart Flash AKROS manufactured by Yamazen Corporation). The obtained purified product was dried at 80° C., thereby obtaining 0.65 parts of a fluorescent dye 60 shown in Table 1 (yield: 45.5%). As a result of a mass analysis, a molecular ion peak was detected at m/z=411.52 (theoretical value: 411.10), and it was identified that the fluorescent dye had the structure of the fluorescent dye 60 shown in Table 1. 
     Example 61 
     &lt;Manufacturing Method of Fluorescent Dye 61&gt; 
     1.0 Part of 5-carboxyfluorescein (Tokyo Chemical Industry Co., Ltd.), 0.7 parts of 3-aminopropylphosphonic acid, and 0.1 parts of para-toluenesulfonic acid were dissolved in 50 parts of xylene, and this solution was reacted at 140° C. for 24 hours. After this reaction liquid was cooled to room temperature, xylene was removed from the reaction liquid using an evaporator, and 50 parts of a petroleum ether was added thereto. Next, an insoluble matter was removed by suction filtration, and then the petroleum ether was removed using an evaporator, thereby obtaining a solid. This solid was dried at 80° C., thereby obtaining 0.75 parts of a fluorescent dye 61 shown in Table 1 (yield: 51.2%). As a result of a mass analysis, a molecular ion peak was detected at m/z=551.02 (theoretical value: 551.18), and it was identified that the fluorescent dye had the structure of the fluorescent dye 61 shown in Table 1. 
     Example 62 
     &lt;Manufacturing Method of Fluorescent Dye 62&gt; 
     1.0 Part of Cy5-NHS ester (Funakoshi Co., Ltd.), 0.5 parts of 3-aminopropanol, and 0.5 parts of triethylamine were dissolved in 50 parts of DMF, and this solution was reacted at room temperature for 12 hours. 50 Parts of water was added to this reaction liquid, a precipitated deposit (solid) was filtered, and, furthermore, the solid was washed with water. The washed solid was dried at 80° C., thereby obtaining 0.70 parts of a fluorescent dye 62 shown in Table 1 (yield: 86.4%). As a result of a mass analysis, a molecular ion peak was detected at m/z=541.18 (theoretical value: 541.36), and it was identified that the fluorescent dye had the structure of the fluorescent dye 62 shown in Table 1. 
     Example 63 
     &lt;Manufacturing Method of Fluorescent Dye 63&gt; 
     1.0 Part of BDPFL, which is a BODIPY-based dye, (manufactured by Tokyo Chemical Industry Co., Ltd.) and 0.3 parts of 3-aminopropanol were dissolved in 50 parts of xylene, and this solution was reacted at 140° C. for 24 hours. After this reaction liquid was cooled to room temperature, xylene was removed from the reaction liquid using an evaporator, and 50 parts of a petroleum ether was added thereto. Next, a precipitated insoluble matter was removed by suction filtration, and then the petroleum ether was removed from the reaction liquid using an evaporator, thereby obtaining a solid. This solid was dried at 80° C., thereby obtaining 0.64 parts of a fluorescent dye 63 shown in Table 1 (yield: 70.6%). As a result of a mass analysis, a molecular ion peak was detected at m/z=350.01 (theoretical value: 350.18), and it was identified that the fluorescent dye had the structure of the fluorescent dye 63 shown in Table 1. 
     Comparative Example 1 
     As a comparative compound 1, the compound A-1 was used. 
     Comparative Example 2 
     As a comparative compound 2, the compound A-9 was used. 
     In Comparative Examples 3 to 11 to be described below, comparative compounds 3 to 11 shown in Table 17 were manufactured. 
     
       
         
           
               
               
             
               
                 TABLE 17 
               
               
                   
               
             
            
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Comparative compound 3 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Comparative compound 4 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Comparative compound 5 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Comparative compound 6 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Comparative compound 7 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Comparative compound 8 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Comparative compound 9 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Comparative compound 10 
               
               
                   
               
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Comparative compound 11 
               
               
                   
               
            
           
         
       
     
     Comparative Example 3 
     &lt;Manufacturing Method of Comparative Compound 3&gt; 
     7.0 Parts of aluminum chloride, 39 parts of urea, 0.2 parts of ammonium molybdate, and 25 parts of trimellitic anhydride were dissolved in 40 parts of N-methyl-2-pyrrolidone (NMP), and this solution was stirred at 139° C. for nine hours. This reaction liquid is cooled to room temperature, and then 100 parts of water was added thereto. Next, a precipitated solid was filtered, and the solid was washed with 50 parts of water. The washed solid was dried at 80° C., thereby obtaining 14.5 parts of a comparative compound 3 shown in Table 17 (yield: 59.3%). As a result of a mass analysis, a molecular ion peak was detected at m/z=751.84 (theoretical value: 751.00), and it was identified that the comparative compound had the structure of the comparative compound 3 shown in Table 17. 
     Comparative Example 4 
     &lt;Manufacturing Method of Comparative Compound 4&gt; 
     An ammonia gas was introduced into a solution of 30 parts of quinoline and 0.7 parts of anhydrous aluminum chloride, furthermore, 1.5 parts of 3-ethoxyphthalonitrile and 2.1 parts of 4-octadecyloxyphthalonitrile were added thereto, and this solution was reacted at 180° C. for seven hours. This reaction liquid is cooled to room temperature, and then 200 parts of methanol and 200 parts of a 10% hydrochloric acid aqueous solution were added thereto. Next, a precipitated solid was filtered, and the solid was washed with 200 parts of water. The washed solid (crude product) was purified using medium-pressure liquid chromatography (Smart Flash AKROS manufactured by Yamazen Corporation). The obtained purified product was dried at 80° C., thereby obtaining 0.36 parts of a comparative compound 4 shown in Table 17 (yield: 12.6%). As a result of a mass analysis, a molecular ion peak was detected at m/z=976.44 (theoretical value: 975.61), and it was identified that the comparative compound had the structure of the comparative compound 4 shown in Table 17. 
     Comparative Example 5 
     &lt;Manufacturing Method of Comparative Compound 5&gt; 
     1.0 Part of the compound A-9 and 0.35 parts of triphenylsilanol were dissolved in 20 parts of dimethyl sulfoxide, and this solution was reacted at 80° C. for eight hours. This reaction liquid is cooled to room temperature, and then 50 parts of water and 10 parts of common salt were added thereto. Next, a precipitated solid was filtered, and the solid was washed with 50 parts of water. The washed solid was dried at 80° C., thereby obtaining 1.00 part of a comparative compound 5 shown in Table 17 (yield: 80.5%). As a result of a mass analysis, a molecular ion peak was detected at m/z=1282.53 (theoretical value: 1271.67), and it was identified that the comparative compound had the structure of the comparative compound 5 shown in Table 17. 
     Comparative Examples 6 to 9 
     &lt;Manufacturing Methods of Comparative Compounds 6 to 9&gt; 
     Comparative compounds 6 to 9 shown in Table 17 were each manufactured in the same manner as in the manufacturing of the comparative compound 5 except that the compound A-9 and triphenylsilanol used in the manufacturing method of the comparative compound 5 were changed to a halogen and an acidic compound shown in Table 18. The halogen and the acidic compound were used in the same molar quantities as those of the compound A-9 and triphenylsilanol in the manufacturing of the comparative compound 5, respectively. The structures of the obtained comparative compounds 6 to 9 were identified by mass analyses, and it was confirmed that the fluorescent dyes had a structure shown in Table 17. Table 19 shows the analysis results of mass spectra. 
     
       
         
           
               
               
               
               
             
               
                 TABLE 18 
               
               
                   
               
               
                   
                   
                 Acidic 
                 Comparative 
               
               
                   
                 Halogens 
                 compound 
                 compound 
               
               
                   
               
             
            
               
                 Comparative example 5 
                 Compound A-9 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Comparative compound 5 
               
               
                   
               
               
                 Comparative example 6 
                 Compound A-9 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Comparative compound 6 
               
               
                   
               
               
                 Comparative example 7 
                 Compound A-9 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Comparative compound 7 
               
               
                   
               
               
                 Comparative example 8 
                 Compound A-9 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Comparative compound 8 
               
               
                   
               
               
                   
               
               
                 Comparative example 9 
                 Comparative compound 3 
                 
                   
                     
                     
                         
                         
                     
                   
                 
                 Comparative compound 9 
               
               
                   
               
            
           
         
       
     
     Comparative Example 10 
     &lt;Manufacturing Method of Comparative Compound 10&gt; 
     2.0 Parts of the compound A-9 and 1.0 part of para-toluenesulfonic acid were dissolved in 50 parts of dimethyl sulfoxide, furthermore, 0.3 parts of 1,8-diazabicyclo[5.4.0]-7-undecene was added to this solution, and these were reacted at 90° C. for five hours. This reaction liquid is cooled to room temperature, and then 100 parts of water was added thereto. Next, a precipitated solid was filtered, and the solid was washed with 50 parts of water. The washed solid was dried at 80° C., thereby obtaining 1.35 parts of a comparative compound 10 shown in Table 17 (yield: 60.0%). As a result of a mass analysis, a molecular ion peak was detected at m/z=933.67 (theoretical value: 932.74), and it was identified that the comparative compound had the structure of the comparative compound 10 shown in Table 17. 
     Comparative Example 11 
     &lt;Manufacturing Method of Comparative Compound 11&gt; 
     One part of the compound A-1 was added to a mixed solution of 9.2 parts of concentrated sulfuric acid and 5.5 parts of 25% fuming sulfuric acid, and this solution was heated and stirred at 50° C. for four hours. After this reaction liquid was cooled, 80 parts of ice was added thereto, and the precipitated deposit (solid) was filtered. Furthermore, the filtered solid was suspended in 50 parts of tetrahydrofuran, and deposition was filtered again. The filtered solid was washed with 50 parts of tetrahydrofuran, and the washed solid was dried, thereby obtaining 0.5 parts of a crude product. The crude product was purified using medium-pressure liquid chromatography (Smart Flash AKROS manufactured by Yamazen Corporation), thereby obtaining 0.2 parts of a comparative compound 11 (yield: 16.0%). As a result of a mass analysis, a molecular ion peak was detected at m/z=939.65 (theoretical value: 940.75), and it was identified that the comparative compound had the structure of the comparative compound 11 shown in Table 17. 
     The analysis results of the mass spectra of the comparative compounds 3 to 11 manufactured in Comparative Examples 3 to 11 will be shown. 
     
       
         
           
               
               
               
             
               
                   
                 TABLE 19 
               
               
                   
                   
               
               
                   
                 Theoretical value 
                 Measurement value 
               
               
                   
                   
               
             
            
               
                   
               
            
           
           
               
               
               
            
               
                 Comparative compound 3 
                 751.00 
                 751.84 
               
               
                 Comparative compound 4 
                 975.61 
                 976.44 
               
               
                 Comparative compound 5 
                 1271.67 
                 1282.53 
               
               
                 Comparative compound 6 
                 1127.54 
                 1128.49 
               
               
                 Comparative compound 7 
                 1169.62 
                 1170.82 
               
               
                 Comparative compound 8 
                 1231.45 
                 1232.37 
               
               
                 Comparative compound 9 
                 932.74 
                 933.67 
               
               
                 Comparative compound 10 
                 1167.46 
                 1168.37 
               
               
                 Comparative compound 11 
                 940.75 
                 939.65 
               
               
                   
               
            
           
         
       
     
     Comparative Example 121 
     As a comparative compound 12, XenoLight DIR (manufactured by Summit Pharmaceuticals International Corporation), which is a cyanine dye, was used. This compound corresponds to a conventional fluorescent labeling agent having a long-chain alkylene group and is accumulated in phospholipids through a hydrophobic interaction. 
     
       
         
         
             
             
         
       
     
     Comparative Example 13 
     As a comparative compound 13, Rhodamine B (manufactured by Tokyo Chemical Industry Co., Ltd.) was used. 
     &lt;II&gt; Dye Solution 
     Example 64 
     &lt;Preparation of Dye Solution 1&gt; 
     1.696 mg of the fluorescent dye 1 was dissolved in 10 ml of dimethyl sulfoxide. This solution was filtered using a nylon membrane filter having a pore diameter of 0.2 m and then diluted 100 times with dimethyl sulfoxide, thereby preparing a dye solution 1 of the fluorescent dye 1. 
     Examples 65 to 126 
     &lt;Preparation of Dye Solutions 2 to 63&gt; 
     Dye solutions 2 to 63 were each prepared in the same manner as in the preparation of the dye solution 1 except that the fluorescent dye 1 and dimethyl sulfoxide used in the preparation of the dye solution 1 were changed to a fluorescent dye and a solvent shown in Table 20. Each fluorescent dye was used in the same molar quantity as that of the fluorescent dye 1, and each solvent was used in the same volume as that of dimethyl sulfoxide. 
     Comparative Examples 12 to 24 
     &lt;Preparation of Dye Solutions 64 to 76&gt; 
     Dye solutions 64 to 76 were each prepared in the same manner as in the preparation of the dye solution 1 except that the fluorescent dye 1 and dimethyl sulfoxide used in the preparation of the dye solution 1 were changed to a fluorescent dye and a solvent shown in Table 20. Each fluorescent dye was used in the same molar quantity as that of the fluorescent dye 1, and each solvent was used in the same volume as that of dimethyl sulfoxide. 
     
       
         
           
               
               
               
               
             
               
                   
                 TABLE 20-1 
               
               
                   
                   
               
               
                   
                 Dye solution 
                 Fluorescent dye 
                 Solvent 
               
               
                   
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
            
               
                 Example 64 
                 Dye solution 1 
                 Fluorescent dye 1 
                 DMSO 
               
               
                 Example 65 
                 Dye solution 2 
                 Fluorescent dye 2 
                 DMSO 
               
               
                 Example 66 
                 Dye solution 3 
                 Fluorescent dye 3 
                 DMSO 
               
               
                 Example 67 
                 Dye solution 4 
                 Fluorescent dye 4 
                 DMSO 
               
               
                 Example 68 
                 Dye solution 5 
                 Fluorescent dye 5 
                 DMSO 
               
               
                 Example 69 
                 Dye solution 6 
                 Fluorescent dye 6 
                 DMSO 
               
               
                 Example 70 
                 Dye solution 7 
                 Fluorescent dye 7 
                 DMSO 
               
               
                 Example 71 
                 Dye solution 8 
                 Fluorescent dye 8 
                 DMSO 
               
               
                 Example 72 
                 Dye solution 9 
                 Fluorescent dye 9 
                 DMSO 
               
               
                 Example 73 
                 Dye solution 10 
                 Fluorescent dye 10 
                 DMSO 
               
               
                 Example 74 
                 Dye solution 11 
                 Fluorescent dye 11 
                 DMSO 
               
               
                 Example 75 
                 Dye solution 12 
                 Fluorescent dye 12 
                 DMSO 
               
               
                 Example 76 
                 Dye solution 13 
                 Fluorescent dye 13 
                 DMSO 
               
               
                 Example 77 
                 Dye solution 14 
                 Fluorescent dye 14 
                 DMSO 
               
               
                 Example 78 
                 Dye solution 15 
                 Fluorescent dye 15 
                 DMSO 
               
               
                 Example 79 
                 Dye solution 16 
                 Fluorescent dye 16 
                 DMSO 
               
               
                 Example 80 
                 Dye solution 17 
                 Fluorescent dye 17 
                 DMSO 
               
               
                 Example 81 
                 Dye solution 18 
                 Fluorescent dye 18 
                 DMSO 
               
               
                 Example 82 
                 Dye solution 19 
                 Fluorescent dye 19 
                 DMSO 
               
               
                 Example 83 
                 Dye solution 20 
                 Fluorescent dye 20 
                 DMSO 
               
               
                 Example 84 
                 Dye solution 21 
                 Fluorescent dye 21 
                 DMSO 
               
               
                 Example 85 
                 Dye solution 22 
                 Fluorescent dye 22 
                 DMSO 
               
               
                 Example 86 
                 Dye solution 23 
                 Fluorescent dye 23 
                 DMSO 
               
               
                 Example 87 
                 Dye solution 24 
                 Fluorescent dye 24 
                 DMSO 
               
               
                 Example 88 
                 Dye solution 25 
                 Fluorescent dye 25 
                 DMSO 
               
               
                 Example 89 
                 Dye solution 26 
                 Fluorescent dye 26 
                 DMSO 
               
               
                 Example 90 
                 Dye solution 27 
                 Fluorescent dye 27 
                 DMSO 
               
               
                 Example 91 
                 Dye solution 28 
                 Fluorescent dye 28 
                 DMSO 
               
               
                 Example 92 
                 Dye solution 29 
                 Fluorescent dye 29 
                 DMSO 
               
               
                 Example 93 
                 Dye solution 30 
                 Fluorescent dye 30 
                 DMSO 
               
               
                 Example 94 
                 Dye solution 31 
                 Fluorescent dye 31 
                 DMSO 
               
               
                 Example 95 
                 Dye solution 32 
                 Fluorescent dye 32 
                 DMSO 
               
               
                   
               
            
           
         
       
     
     
       
         
           
               
               
               
               
             
               
                   
                 TABLE 20-2 
               
               
                   
                   
               
               
                   
                 Fluorescent 
                   
                   
               
               
                   
                 labeling agent 
                 Fluorescent dye 
                 Solvent 
               
               
                   
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
            
               
                 Example 96 
                 Dye solution 33 
                 Fluorescent dye 33 
                 DMSO 
               
               
                 Example 97 
                 Dye solution 34 
                 Fluorescent dye 34 
                 DMSO 
               
               
                 Example 98 
                 Dye solution 35 
                 Fluorescent dye 35 
                 DMSO 
               
               
                 Example 99 
                 Dye solution 36 
                 Fluorescent dye 36 
                 DMSO 
               
               
                 Example 100 
                 Dye solution 37 
                 Fluorescent dye 37 
                 DMSO 
               
               
                 Example 101 
                 Dye solution 38 
                 Fluorescent dye 38 
                 DMSO 
               
               
                 Example 102 
                 Dye solution 39 
                 Fluorescent dye 39 
                 DMSO 
               
               
                 Example 103 
                 Dye solution 40 
                 Fluorescent dye 40 
                 DMSO 
               
               
                 Example 104 
                 Dye solution 41 
                 Fluorescent dye 41 
                 DMSO 
               
               
                 Example 105 
                 Dye solution 42 
                 Fluorescent dye 42 
                 DMSO 
               
               
                 Example 106 
                 Dye solution 43 
                 Fluorescent dye 43 
                 DMSO 
               
               
                 Example 107 
                 Dye solution 44 
                 Fluorescent dye 44 
                 DMSO 
               
               
                 Example 108 
                 Dye solution 45 
                 Fluorescent dye 45 
                 DMSO 
               
               
                 Example 109 
                 Dye solution 46 
                 Fluorescent dye 46 
                 DMSO 
               
               
                 Example 110 
                 Dye solution 47 
                 Fluorescent dye 47 
                 DMSO 
               
               
                 Example 111 
                 Dye solution 48 
                 Fluorescent dye 48 
                 DMSO 
               
               
                 Example 112 
                 Dye solution 49 
                 Fluorescent dye 49 
                 DMSO 
               
               
                 Example 113 
                 Dye solution 50 
                 Fluorescent dye 50 
                 DMSO 
               
               
                 Example 114 
                 Dye solution 51 
                 Fluorescent dye 51 
                 DMSO 
               
               
                 Example 115 
                 Dye solution 52 
                 Fluorescent dye 52 
                 DMSO 
               
               
                 Example 116 
                 Dye solution 53 
                 Fluorescent dye 53 
                 DMSO 
               
               
                 Example 117 
                 Dye solution 54 
                 Fluorescent dye 54 
                 DMSO 
               
               
                 Example 118 
                 Dye solution 55 
                 Fluorescent dye 55 
                 DMSO 
               
               
                 Example 119 
                 Dye solution 56 
                 Fluorescent dye 56 
                 DMSO 
               
               
                 Example 120 
                 Dye solution 57 
                 Fluorescent dye 57 
                 DMSO 
               
               
                 Example 121 
                 Dye solution 58 
                 Fluorescent dye 58 
                 DMSO 
               
               
                 Example 122 
                 Dye solution 59 
                 Fluorescent dye 59 
                 DMSO 
               
               
                 Example 123 
                 Dye solution 60 
                 Fluorescent dye 60 
                 DMSO 
               
               
                 Example 124 
                 Dye solution 61 
                 Fluorescent dye 61 
                 DMSO 
               
               
                 Example 125 
                 Dye solution 62 
                 Fluorescent dye 62 
                 DMSO 
               
               
                 Example 126 
                 Dye solution 63 
                 Fluorescent dye 63 
                 DMSO 
               
               
                   
               
            
           
         
       
     
     
       
         
           
               
               
               
               
             
               
                   
                 TABLE 20-3 
               
               
                   
                   
               
               
                   
                 Fluorescent 
                   
                   
               
               
                   
                 labeling agent 
                 Fluorescent dye 
                 Solvent 
               
               
                   
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
            
               
                 Comparative 
                 Dye solution 64 
                 Fluorescent dye 1 
                 DMSO 
               
               
                 Example 12 
               
               
                 Comparative 
                 Dye solution 65 
                 Fluorescent dye 2 
                 DMSO 
               
               
                 Example 13 
               
               
                 Comparative 
                 Dye solution 66 
                 Fluorescent dye 3 
                 DMSO 
               
               
                 Example 14 
               
               
                 Comparative 
                 Dye solution 67 
                 Fluorescent dye 4 
                 DMSO 
               
               
                 Example 15 
               
               
                 Comparative 
                 Dye solution 68 
                 Fluorescent dye 5 
                 DMSO 
               
               
                 Example 16 
               
               
                 Comparative 
                 Dye solution 69 
                 Fluorescent dye 6 
                 DMSO 
               
               
                 Example 17 
               
               
                 Comparative 
                 Dye solution 70 
                 Fluorescent dye 7 
                 DMSO 
               
               
                 Example 18 
               
               
                 Comparative 
                 Dye solution 71 
                 Fluorescent dye 8 
                 DMSO 
               
               
                 Example 19 
               
               
                 Comparative 
                 Dye solution 72 
                 Fluorescent dye 9 
                 DMSO 
               
               
                 Example 20 
               
               
                 Comparative 
                 Dye solution 73 
                 Fluorescent dye 10 
                 DMSO 
               
               
                 Example 21 
               
               
                 Comparative 
                 Dye solution 74 
                 Fluorescent dye 11 
                 DMSO 
               
               
                 Example 22 
               
               
                 Comparative 
                 Dye solution 75 
                 Fluorescent dye 12 
                 DMSO 
               
               
                 Example 23 
               
               
                 Comparative 
                 Dye solution 76 
                 Fluorescent dye 13 
                 Water 
               
               
                 Example 24 
               
               
                   
               
            
           
         
       
     
     &lt;Evaluation of Fluorescence Intensity of Dye Solution&gt; 
     For each dye solution, the fluorescent spectrum was measured using a fluorometer (manufactured by JASCO Corporation, FP-6500). Furthermore, a fluorescence intensity in a range of fluorescent wavelengths shown in Table 22 was added to the obtained measurement value, thereby obtaining a fluorescence intensity. In addition, as excitation light at this time, a wavelength corresponding to the absorption maximum wavelength of the dye on the longest wavelength side was used. 
     &lt;III&gt; Fluorescent Labeling Agent 
     Example 127 
     &lt;Preparation of Fluorescent Labeling Agent 1&gt; 
     1.696 mg of the fluorescent dye 1 was dissolved in 10 ml of dimethyl sulfoxide. The solution was filtered with a nylon membrane filter having a pore diameter of 0.2 μm and then diluted 100 times in a RPMI 1640 medium, thereby preparing a fluorescent labeling agent 1 of the fluorescent dye 1. 
     Examples 128 to 189 
     &lt;Preparation of Fluorescent Labeling Agents 2 to 63&gt; 
     Fluorescent labeling agents 2 to 63 were each prepared in the same manner as in the preparation of the fluorescent labeling agent 1 except that the fluorescent dye 1 and dimethyl sulfoxide used in the preparation of the fluorescent labeling agent 1 were changed to a fluorescent dye and a solvent shown in Table 21. Each fluorescent dye was used in the same molar quantity as that of the fluorescent dye 1, and each solvent was used in the same volume as that of dimethyl sulfoxide. 
     Comparative Examples 25 to 37 
     &lt;Preparation of Fluorescent Labeling Agents 64 to 76&gt; 
     Fluorescent labeling agents 64 to 76 were each prepared in the same manner as in the preparation of the fluorescent labeling agent 1 except that the fluorescent dye 1 and dimethyl sulfoxide used in the preparation of the fluorescent labeling agent 1 were changed to a fluorescent dye and a solvent shown in Table 21. Each fluorescent dye was used in the same molar quantity as that of the fluorescent dye 1, and each solvent was used in the same volume as that of dimethyl sulfoxide. 
     
       
         
           
               
               
               
               
             
               
                   
                 TABLE 21-1 
               
               
                   
                   
               
               
                   
                 Fluorescent 
                   
                   
               
               
                   
                 labeling agent 
                 Fluorescent dye 
                 Solvent 
               
               
                   
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
            
               
                 Example 127 
                 Dye solution 1 
                 Fluorescent dye 1 
                 DMSO 
               
               
                 Example 128 
                 Dye solution 2 
                 Fluorescent dye 2 
                 DMSO 
               
               
                 Example 129 
                 Dye solution 3 
                 Fluorescent dye 3 
                 DMSO 
               
               
                 Example 130 
                 Dye solution 4 
                 Fluorescent dye 4 
                 DMSO 
               
               
                 Example 131 
                 Dye solution 5 
                 Fluorescent dye 5 
                 DMSO 
               
               
                 Example 132 
                 Dye solution 6 
                 Fluorescent dye 6 
                 DMSO 
               
               
                 Example 133 
                 Dye solution 7 
                 Fluorescent dye 7 
                 DMSO 
               
               
                 Example 134 
                 Dye solution 8 
                 Fluorescent dye 8 
                 DMSO 
               
               
                 Example 135 
                 Dye solution 9 
                 Fluorescent dye 9 
                 DMSO 
               
               
                 Example 136 
                 Dye solution 10 
                 Fluorescent dye 10 
                 DMSO 
               
               
                 Example 137 
                 Dye solution 11 
                 Fluorescent dye 11 
                 DMSO 
               
               
                 Example 138 
                 Dye solution 12 
                 Fluorescent dye 12 
                 DMSO 
               
               
                 Example 139 
                 Dye solution 13 
                 Fluorescent dye 13 
                 DMSO 
               
               
                 Example 140 
                 Dye solution 14 
                 Fluorescent dye 14 
                 DMSO 
               
               
                 Example 141 
                 Dye solution 15 
                 Fluorescent dye 15 
                 DMSO 
               
               
                 Example 142 
                 Dye solution 16 
                 Fluorescent dye 16 
                 DMSO 
               
               
                 Example 143 
                 Dye solution 17 
                 Fluorescent dye 17 
                 DMSO 
               
               
                 Example 144 
                 Dye solution 18 
                 Fluorescent dye 18 
                 DMSO 
               
               
                 Example 145 
                 Dye solution 19 
                 Fluorescent dye 19 
                 DMSO 
               
               
                 Example 146 
                 Dye solution 20 
                 Fluorescent dye 20 
                 DMSO 
               
               
                 Example 147 
                 Dye solution 21 
                 Fluorescent dye 21 
                 DMSO 
               
               
                 Example 148 
                 Dye solution 22 
                 Fluorescent dye 22 
                 DMSO 
               
               
                 Example 149 
                 Dye solution 23 
                 Fluorescent dye 23 
                 DMSO 
               
               
                 Example 150 
                 Dye solution 24 
                 Fluorescent dye 24 
                 DMSO 
               
               
                 Example 151 
                 Dye solution 25 
                 Fluorescent dye 25 
                 DMSO 
               
               
                 Example 152 
                 Dye solution 26 
                 Fluorescent dye 26 
                 DMSO 
               
               
                 Example 153 
                 Dye solution 27 
                 Fluorescent dye 27 
                 DMSO 
               
               
                 Example 154 
                 Dye solution 28 
                 Fluorescent dye 28 
                 DMSO 
               
               
                 Example 155 
                 Dye solution 29 
                 Fluorescent dye 29 
                 DMSO 
               
               
                 Example 156 
                 Dye solution 30 
                 Fluorescent dye 30 
                 DMSO 
               
               
                 Example 157 
                 Dye solution 31 
                 Fluorescent dye 31 
                 DMSO 
               
               
                 Example 158 
                 Dye solution 32 
                 Fluorescent dye 32 
                 DMSO 
               
               
                   
               
            
           
         
       
     
     
       
         
           
               
               
               
               
             
               
                   
                 TABLE 21-2 
               
               
                   
                   
               
               
                   
                 Fluorescent 
                   
                   
               
               
                   
                 labeling agent 
                 Fluorescent dye 
                 Solvent 
               
               
                   
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
            
               
                 Example 159 
                 Dye solution 33 
                 Fluorescent dye 33 
                 DMSO 
               
               
                 Example 160 
                 Dye solution 34 
                 Fluorescent dye 34 
                 DMSO 
               
               
                 Example 161 
                 Dye solution 35 
                 Fluorescent dye 35 
                 DMSO 
               
               
                 Example 162 
                 Dye solution 36 
                 Fluorescent dye 36 
                 DMSO 
               
               
                 Example 163 
                 Dye solution 37 
                 Fluorescent dye 37 
                 DMSO 
               
               
                 Example 164 
                 Dye solution 38 
                 Fluorescent dye 38 
                 DMSO 
               
               
                 Example 165 
                 Dye solution 39 
                 Fluorescent dye 39 
                 DMSO 
               
               
                 Example 166 
                 Dye solution 40 
                 Fluorescent dye 40 
                 DMSO 
               
               
                 Example 167 
                 Dye solution 41 
                 Fluorescent dye 41 
                 DMSO 
               
               
                 Example 168 
                 Dye solution 42 
                 Fluorescent dye 42 
                 DMSO 
               
               
                 Example 169 
                 Dye solution 43 
                 Fluorescent dye 43 
                 DMSO 
               
               
                 Example 170 
                 Dye solution 44 
                 Fluorescent dye 44 
                 DMSO 
               
               
                 Example 171 
                 Dye solution 45 
                 Fluorescent dye 45 
                 DMSO 
               
               
                 Example 172 
                 Dye solution 46 
                 Fluorescent dye 46 
                 DMSO 
               
               
                 Example 173 
                 Dye solution 47 
                 Fluorescent dye 47 
                 DMSO 
               
               
                 Example 174 
                 Dye solution 48 
                 Fluorescent dye 48 
                 DMSO 
               
               
                 Example 175 
                 Dye solution 49 
                 Fluorescent dye 49 
                 DMSO 
               
               
                 Example 176 
                 Dye solution 50 
                 Fluorescent dye 50 
                 DMSO 
               
               
                 Example 177 
                 Dye solution 51 
                 Fluorescent dye 51 
                 DMSO 
               
               
                 Example 178 
                 Dye solution 52 
                 Fluorescent dye 52 
                 DMSO 
               
               
                 Example 179 
                 Dye solution 53 
                 Fluorescent dye 53 
                 DMSO 
               
               
                 Example 180 
                 Dye solution 54 
                 Fluorescent dye 54 
                 DMSO 
               
               
                 Example 181 
                 Dye solution 55 
                 Fluorescent dye 55 
                 DMSO 
               
               
                 Example 182 
                 Dye solution 56 
                 Fluorescent dye 56 
                 DMSO 
               
               
                 Example 183 
                 Dye solution 57 
                 Fluorescent dye 57 
                 DMSO 
               
               
                 Example 184 
                 Dye solution 58 
                 Fluorescent dye 58 
                 DMSO 
               
               
                 Example 185 
                 Dye solution 59 
                 Fluorescent dye 59 
                 DMSO 
               
               
                 Example 186 
                 Dye solution 60 
                 Fluorescent dye 60 
                 DMSO 
               
               
                 Example 187 
                 Dye solution 61 
                 Fluorescent dye 61 
                 DMSO 
               
               
                 Example 188 
                 Dye solution 62 
                 Fluorescent dye 62 
                 DMSO 
               
               
                 Example 189 
                 Dye solution 63 
                 Fluorescent dye 63 
                 DMSO 
               
               
                   
               
            
           
         
       
     
     
       
         
           
               
               
               
               
             
               
                   
                 TABLE 21-3 
               
               
                   
                   
               
               
                   
                 Fluorescent 
                   
                   
               
               
                   
                 labeling agent 
                 Fluorescent dye 
                 Solvent 
               
               
                   
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
            
               
                 Comparative 
                 Dye solution 64 
                 Comparative 
                 DMSO 
               
               
                 Example 25 
                   
                 compound 1 
               
               
                 Comparative 
                 Dye solution 65 
                 Comparative 
                 DMSO 
               
               
                 Example 26 
                   
                 compound 2 
               
               
                 Comparative 
                 Dye solution 66 
                 Comparative 
                 DMSO 
               
               
                 Example 27 
                   
                 compound 3 
               
               
                 Comparative 
                 Dye solution 67 
                 Comparative 
                 DMSO 
               
               
                 Example 28 
                   
                 compound 4 
               
               
                 Comparative 
                 Dye solution 68 
                 Comparative 
                 DMSO 
               
               
                 Example 29 
                   
                 compound 5 
               
               
                 Comparative 
                 Dye solution 69 
                 Comparative 
                 DMSO 
               
               
                 Example 30 
                   
                 compound 6 
               
               
                 Comparative 
                 Dye solution 70 
                 Comparative 
                 DMSO 
               
               
                 Example 31 
                   
                 compound 7 
               
               
                 Comparative 
                 Dye solution 71 
                 Comparative 
                 DMSO 
               
               
                 Example 32 
                   
                 compound 8 
               
               
                 Comparative 
                 Dye solution 72 
                 Comparative 
                 DMSO 
               
               
                 Example 33 
                   
                 compound 9 
               
               
                 Comparative 
                 Dye solution 73 
                 Comparative 
                 DMSO 
               
               
                 Example 34 
                   
                 compound 10 
               
               
                 Comparative 
                 Dye solution 74 
                 Comparative 
                 DMSO 
               
               
                 Example 35 
                   
                 compound 11 
               
               
                 Comparative 
                 Dye solution 75 
                 Comparative 
                 DMSO 
               
               
                 Example 36 
                   
                 compound 12 
               
               
                 Comparative 
                 Dye solution 76 
                 Comparative 
                 RPMI 1640 
               
               
                 Example 37 
                   
                 compound 13 
                 medium 
               
               
                   
               
            
           
         
       
     
     &lt;Evaluation of Cell Toxicity of Fluorescent Labeling Agent&gt; 
     Human epithelium cancer cells A431 were seeded in a 96-well plate (1×10 4  cells/well). Next, the A431 were cultured for 24 hours using an RPMI 1640 medium to which 10% fetal bovine serum (FBS) and 1% penicillin-streptomycin had been added in an incubator (37° C., 5% CO 2 -containing Air, humidified environment). As the RPMI 1640 medium, an RPMI-164-Medium manufactured by Sigma-Aldrich Inc. was used. 
     After cultivation, the medium was removed, the fluorescent labeling agents prepared in Examples 83 to 123 and Comparative Examples 25 to 37 and an RPMI 1640 medium containing 1% dimethyl sulfoxide (DMSO medium solution) were added thereto. These were left to stand in the incubator for one hour and then washed in the RPMI 1640 medium. 10 μL of a cell counting kit-8 (manufactured by Dojindo Laboratories.) was added to each well and left to stand in the incubator (37° C., 5% CO 2 -containing Air, humidified environment) for one hour. Next, the absorbance at 450 nm was measured using a plate reader (SPARK, manufactured by Tecan Trading AG). 
     The relative value of the absorbance of each fluorescent labeling agent when the absorbance of the well to which the DMSO medium solution had been added was regarded as one was calculated and evaluated based on the following standards. When the relative value was evaluated as “P”, it can be said that the fluorescent labeling agent does not exhibit cell toxicity. At the time of calculating the relative value of the absorbance of the fluorescent labeling agent, a value obtained by subtracting the absorbance before the addition of the cell counting kit-8 (manufactured by Dojindo Laboratories.) from the measured absorbance was used. The evaluation results are shown in Table 22. 
     (Evaluation Standards)
         P (Pass): 0.8 or more   F (Failure): Less than 0.8       

     &lt;Evaluation of Fluorescence Intensity of Fluorescent Labeling Agent&gt; 
     Human epithelium cancer cells A431 were seeded in a 96-well plate (1×10 4  cells/well). Next, the A431 were cultured for 24 hours using an RPMI 1640 medium to which 10% fetal bovine serum (FBS) and 1% penicillin-streptomycin had been added in an incubator (37° C., 5% CO 2 -containing Air, humidified environment). 
     After cultivation, the medium was removed, and the fluorescent labeling agents prepared in Examples 127 to 167 and Comparative Examples 25 to 37 were added thereto and left to stand in the incubator for one hour. Next, these were washed in the RPMI 1640 medium. The fluorescence intensities were evaluated in fluorescence wavelength ranges shown in Table 22 using the plate reader (SPARK, manufactured by Tecan Trading AG). 
       FIG.  1    shows the evaluation results of the fluorescence intensities of the fluorescent labeling agents 1, 15, 19, 24, 25, 68, and 75. It was possible to confirm that the fluorescent labeling agents 1, 15, 19, 24, and 25 (examples), which are the embodiment of the present invention, exhibit high fluorescence intensities compared with the fluorescent labeling agents 68 and 75 (comparative examples) prepared using the comparative compounds. 
     &lt;Evaluation of Property of Fluorescent Dye being Accumulated in Phospholipids&gt; 
     The property of each dye being accumulated in phospholipids was calculated from the fluorescence intensity integral value obtained from the fluorescent spectrum of the dye solution and the fluorescence intensity obtained from the fluorescence intensity of the fluorescent labeling agent using an expression (1). The relative value of the property of each fluorescent labeling agent being accumulated in phospholipids when the property of the comparative compound 12 being accumulated in phospholipids was regarded as one was calculated and evaluated based on the following standards. In a case where the relative value is evaluated as 3 or more, it can be said that each fluorescent dye has a favorable property of being accumulated in phospholipids. 
     (Evaluation Standards)
         4: The property of being accumulated in phospholipids is 4 or more.   3: The property of being accumulated in phospholipids is 2 or more and less than 4.   2: The property of being accumulated in phospholipids is 1 or more and less than 2.   1: The property of being accumulated in phospholipids is less than 1.       

     [Expression 1] 
     Property of being accumulated in phospholipids=fluorescence intensity of fluorescent labeling agent/fluorescence intensity of dye solution (1) 
     The evaluation results of the property of being accumulated in phospholipids are shown in Table 22. 
     It was possible to confirm that the fluorescent labeling agents (examples), which are the embodiment of the present invention, exhibit an excellent property of being accumulated in phospholipids compared with the fluorescent labeling agents (comparative examples) prepared using the comparative compounds. 
     &lt;Evaluation of Visibility of Cell&gt; 
     Human epithelium cancer cells A431 were seeded in a 96-well plate (1×10 4  cells/well). The A431 were cultured for 24 hours using an RPMI 1640 medium to which 10% fetal bovine serum (FBS) and 1% penicillin-streptomycin had been added in an incubator (37° C., 5% CO 2 -containing Air, humidified environment). 
     After cultivation, the medium was removed, and the fluorescent labeling agents prepared in Examples 127 to 189 and Comparative Examples 25 to 37 were added thereto and left to stand in the incubator for one hour. Next, these were washed in the RPMI 1640 medium. The dark field images and fluorescent images of the cells were observed using a fluorescent microscope (manufactured by Keyence Corporation, BZ-X800) equipped with an excitation filter for an appropriate wavelength and a fluorescent filter and evaluated based on the following standards. The evaluation results are shown in Table 22. 
     (Evaluation Standards)
         P (Pass): Clear   F (Failure): Unclear       

     
       
         
           
               
               
               
               
               
               
             
               
                 TABLE 22-1 
               
             
            
               
                   
               
               
                   
                   
                   
                   
                   
                 Evaluation 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                   
                   
                   
                 Fluorescent  
                 Fluorescent 
                   
                 Property of being 
                   
               
               
                   
                 Fluorescent 
                 Dye  
                 labeling 
                 wavelength 
                 Cell  
                 accumulated in 
                 Cell 
               
               
                   
                 dye 
                 solution 
                 agent 
                 (nm) 
                 toxicity 
                 phospholipids 
                 visibility 
               
               
                   
               
               
                 Example 127 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 1 
                 1 
                 agent 1 
                   
                   
                   
                   
               
               
                 Example 128 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 2 
                 2 
                 agent 2 
                   
                   
                   
                   
               
               
                 Example 129 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 3 
                 3 
                 agent 3 
                   
                   
                   
                   
               
               
                 Example 130 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 4 
                 4 
                 agent 4 
                   
                   
                   
                   
               
               
                 Example 131 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 3 
                 P 
               
               
                   
                 dye 5 
                 5 
                 agent 5 
                   
                   
                   
                   
               
               
                 Example 132 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 6 
                 6 
                 agent 6 
                   
                   
                   
                   
               
               
                 Example 133 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 7 
                 7 
                 agent 7 
                   
                   
                   
                   
               
               
                 Example 134 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 8 
                 8 
                 agent 8 
                   
                   
                   
                   
               
               
                 Example 135 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 9 
                 9 
                 agent 9 
                   
                   
                   
                   
               
               
                 Example 136 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 10 
                 10 
                 agent 10 
                   
                   
                   
                   
               
               
                 Example 137 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 11 
                 11 
                 agent 11 
                   
                   
                   
                   
               
               
                 Example 138 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 12 
                 12 
                 agent 12 
                   
                   
                   
                   
               
               
                 Example 139 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 13 
                 13 
                 agent 13 
                   
                   
                   
                   
               
               
                 Example 140 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 14 
                 14 
                 agent 14 
                   
                   
                   
                   
               
               
                 Example 141 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 15 
                 15 
                 agent 15 
                   
                   
                   
                   
               
               
                 Example 142 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 16 
                 16 
                 agent 16 
                   
                   
                   
                   
               
               
                 Example 143 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 17 
                 17 
                 agent 17 
                   
                   
                   
                   
               
               
                 Example 144 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 18 
                 18 
                 agent 18 
                   
                   
                   
                   
               
               
                 Example 145 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 19 
                 19 
                 agent 19 
                   
                   
                   
                   
               
               
                 Example 146 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 20 
                 20 
                 agent 20 
                   
                   
                   
                   
               
               
                 Example 147 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 21 
                 21 
                 agent 21 
                   
                   
                   
                   
               
               
                 Example 148 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 22 
                 22 
                 agent 22 
                   
                   
                   
                   
               
               
                 Example 149 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 3 
                 P 
               
               
                   
                 dye 23 
                 23 
                 agent 23 
                   
                   
                   
                   
               
               
                 Example 150 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 24 
                 24 
                 agent 24 
                   
                   
                   
                   
               
               
                 Example 151 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 25 
                 25 
                 agent 25 
                   
                   
                   
                   
               
               
                 Example 152 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 26 
                 26 
                 agent 26 
                   
                   
                   
                   
               
               
                 Example 153 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 27 
                 27 
                 agent 27 
                   
                   
                   
                   
               
               
                 Example 154 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 28 
                 28 
                 agent 28 
                   
                   
                   
                   
               
               
                 Example 155 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 29 
                 29 
                 agent 29 
                   
                   
                   
                   
               
               
                 Example 156 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 30 
                 30 
                 agent 30 
                   
                   
                   
                   
               
               
                 Example 157 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 31 
                 31 
                 agent 31 
                   
                   
                   
                   
               
               
                 Example 158 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 32 
                 32 
                 agent 32 
               
               
                   
               
            
           
         
       
     
     
       
         
           
               
               
               
               
               
               
             
               
                 TABLE 22-2 
               
             
            
               
                   
               
               
                   
                   
                   
                   
                   
                 Evaluation 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                   
                   
                   
                 Fluorescent  
                 Fluorescent 
                   
                 Property of being 
                   
               
               
                   
                 Fluorescent 
                 Dye  
                 labeling 
                 wavelength 
                 Cell 
                 accumulated in 
                 Cell 
               
               
                   
                 dye 
                 solution 
                 agent 
                 (nm) 
                 toxicity 
                 phospholipids 
                 visibility 
               
               
                   
               
               
                 Example 160 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 34 
                 34 
                 agent 34 
                   
                   
                   
                   
               
               
                 Example 161 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 35 
                 35 
                 agent 35 
                   
                   
                   
                   
               
               
                 Example 162 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 36 
                 36 
                 agent 36 
                   
                   
                   
                   
               
               
                 Example 163 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 37 
                 37 
                 agent 37 
                   
                   
                   
                   
               
               
                 Example 164 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 630-650 
                 P 
                 4 
                 P 
               
               
                   
                 dye 38 
                 38 
                 agent 38 
                   
                   
                   
                   
               
               
                 Example 165 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 560-570 
                 P 
                 4 
                 P 
               
               
                   
                 dye 39 
                 39 
                 agent 39 
                   
                   
                   
                   
               
               
                 Example 166 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 630-650 
                 P 
                 4 
                 P 
               
               
                   
                 dye 40 
                 40 
                 agent 40 
                   
                   
                   
                   
               
               
                 Example 167 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 560-570 
                 P 
                 4 
                 P 
               
               
                   
                 dye 41 
                 41 
                 agent 41 
                   
                   
                   
                   
               
               
                 Example 168 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 42 
                 42 
                 agent 42 
                   
                   
                   
                   
               
               
                 Example 169 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 43 
                 43 
                 agent 43 
                   
                   
                   
                   
               
               
                 Example 170 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 44 
                 44 
                 agent 44 
                   
                   
                   
                   
               
               
                 Example 171 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 45 
                 45 
                 agent 45 
                   
                   
                   
                   
               
               
                 Example 172 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 46 
                 46 
                 agent 46 
                   
                   
                   
                   
               
               
                 Example 173 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 47 
                 47 
                 agent 47 
                   
                   
                   
                   
               
               
                 Example 174 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 48 
                 48 
                 agent 48 
                   
                   
                   
                   
               
               
                 Example 175 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 49 
                 49 
                 agent 49 
                   
                   
                   
                   
               
               
                 Example 176 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 50 
                 50 
                 agent 50 
                   
                   
                   
                   
               
               
                 Example 177 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 51 
                 51 
                 agent 51 
                   
                   
                   
                   
               
               
                 Example 178 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 52 
                 52 
                 agent 52 
                   
                   
                   
                   
               
               
                 Example 179 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 53 
                 53 
                 agent 53 
                   
                   
                   
                   
               
               
                 Example 180 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 54 
                 54 
                 agent 54 
                   
                   
                   
                   
               
               
                 Example 181 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 55 
                 55 
                 agent 55 
                   
                   
                   
                   
               
               
                 Example 182 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 56 
                 56 
                 agent 56 
                   
                   
                   
                   
               
               
                 Example 183 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 57 
                 57 
                 agent 57 
                   
                   
                   
                   
               
               
                 Example 184 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 58 
                 58 
                 agent 58 
                   
                   
                   
                   
               
               
                 Example 185 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 59 
                 59 
                 agent 59 
                   
                   
                   
                   
               
               
                 Example 186 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 630-650 
                 P 
                 4 
                 P 
               
               
                   
                 dye 60 
                 60 
                 agent 60 
                   
                   
                   
                   
               
               
                 Example 187 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 630-650 
                 P 
                 4 
                 P 
               
               
                   
                 dye 61 
                 61 
                 agent 61 
                   
                   
                   
                   
               
               
                 Example 188 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 4 
                 P 
               
               
                   
                 dye 62 
                 62 
                 agent 62 
                   
                   
                   
                   
               
               
                 Example 189 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 560-570 
                 P 
                 4 
                 P 
               
               
                   
                 dye 63 
                 63 
                 agent 63 
               
               
                   
               
            
           
         
       
     
     
       
         
           
               
               
               
               
               
               
             
               
                 TABLE 22-3 
               
             
            
               
                   
               
               
                   
                   
                   
                   
                   
                 Evaluation 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                   
                   
                   
                 Fluorescent  
                 Fluorescent 
                   
                 Property of being 
                   
               
               
                   
                 Fluorescent 
                 Dye 
                 labeling 
                 wavelength 
                 Cell  
                 accumulated in 
                 Cell 
               
               
                   
                 dye 
                 solution 
                 agent 
                 (nm) 
                 toxicity 
                 phospholipids 
                 visibility 
               
               
                   
               
               
                 Comparative 
                 Comparative 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 1 
                 F 
               
               
                 Example 26 
                 compound 2 
                 65 
                 agent 43 
                   
                   
                   
                   
               
               
                 Comparative 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 1 
                 F 
               
               
                 Example 27 
                 dye 3 
                 66 
                 agent 44 
                   
                   
                   
                   
               
               
                 Comparative 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 1 
                 F 
               
               
                 Example 28 
                 dye 4 
                 67 
                 agent 45 
                   
                   
                   
                   
               
               
                 Comparative 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 1 
                 F 
               
               
                 Example 29 
                 dye 5 
                 68 
                 agent 46 
                   
                   
                   
                   
               
               
                 Comparative 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 1 
                 F 
               
               
                 Example 30 
                 dye 6 
                 69 
                 agent 47 
                   
                   
                   
                   
               
               
                 Comparative 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 1 
                 F 
               
               
                 Example 31 
                 dye 7 
                 70 
                 agent 48 
                   
                   
                   
                   
               
               
                 Comparative 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 1 
                 F 
               
               
                 Example 32 
                 dye 8 
                 71 
                 agent 49 
                   
                   
                   
                   
               
               
                 Comparative 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 1 
                 F 
               
               
                 Example 33 
                 dye 9 
                 72 
                 agent 50 
                   
                   
                   
                   
               
               
                 Comparative 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 1 
                 F 
               
               
                 Example 34 
                 dye 10 
                 73 
                 agent 51 
                   
                   
                   
                   
               
               
                 Comparative 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 1 
                 F 
               
               
                 Example 35 
                 dye 11 
                 74 
                 agent 52 
                   
                   
                   
                   
               
               
                 Comparative 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 780-800 
                 P 
                 1 
                 F 
               
               
                 Example 36 
                 dye 12 
                 75 
                 agent 53 
                   
                   
                   
                   
               
               
                 Comparative 
                 Fluorescent 
                 Dye solution 
                 Fluorescent labeling 
                 630-650 
                 P 
                 1 
                 F 
               
               
                 Example 37 
                 dye 13 
                 76 
                 agent 54 
               
               
                   
               
            
           
         
       
     
     The evaluation results of the visibility of the cells labeled with the fluorescent labeling agents 1, 15, 19, 24, 25, 68, and 75 are sequentially shown in  FIGS.  2  to  8    (magnification: 10 times, optical uptake time: 1 second). 
     The evaluation results of the visibility of the cells labeled with the fluorescent labeling agents 42 and 53 are sequentially shown in  FIGS.  9  to  10    (magnification: 40 times, optical uptake time: 1 second). 
     As is clear from the comparison between  FIGS.  7  and  8    corresponding to the comparative examples and  FIGS.  2  to  6 ,  9 , and  10    corresponding to the examples, it was observed that, according to the fluorescent labeling agent of the embodiment of the present invention, higher fluorescence intensities were exhibited due to specific substituents. As described above, it is found that the fluorescent labeling agent of the embodiment of the present invention (examples) is excellent in terms of the property of being accumulated in cells compared with the comparative compounds and thereby enables the obtainment of superior visibility. From what has been described above, it has been clarified that the fluorescent labeling agent according to the embodiment of the present invention has excellent characteristics as a fluorescent labeling agent.