Patent ID: 6926885

Claim:
A cyanine dye as represented by the general formula V: wherein Q is a fragment selected from the group consisting of where R 30 represents a hydrogen atom, a hydroxy group, a carboxy group, an alkoxy residue containing 1 to 4 carbon atoms or a chlorine atom, b is an integer 2 or 3, R 31 represents a hydrogen atom or an alkyl residue containing 1 to 4 carbon atoms, X and Y independently represent an —O—, —S—, —CH═CH— or —C(CH 2 R 32 )(CH 2 R 32 )— fragment each, R 20 to R 29 , R 32 and R 33 independently represent a hydrogen atom, a hydroxy group, a carboxy-, a sulfonic acid residue or a carboxyalkyl-, alkoxycarbonyl or alkoxyoxoalkyl residue containing up to 10 C atoms or a sulfoalkyl residue containing up to 4 C atoms, or a non-selectively bonding macromolecule or a residue of the general formula VI —(O) v —(CH 2 ) o —CO—NR 34 —(CH2) s —(NH—CO) q —R 35 (VI) on the condition that, where X and Y are O, S, —CH═CH— or —C(CH 3 ) 2 — at least one of the residues R 20 to R 29 corresponds to a non-selectively bonding macromolecule or a compound of the general formula VI, where o and s equal 0 or independently represent an integer between 1 and 6, q and v independently represent 0 or 1, R 34 represents a hydrogen atom or a methyl residue, R 35 represents an alkyl residue containing 3 to 6 C atoms and comprising 2 to n−1 hydroxy groups, with n being the number of C atoms, or an alkyl residue containing 1 to 6 C atoms that carries 1 to 3 additional carboxy groups, an aryl residue containing 6 to 9 C atoms or arylalkyl residue containing 7 to 15 C atoms, or a residue of the general formula IIId or IIIe on the condition that q is 1, or a non-selectively bonding macromolecule, or R 20 and R 21 , R 21 and R 22 , R 22 and R 23 , R 24 and R 25 , R 25 and R 26 , and/or R 26 and R 27 , together with the interspersed carbon atoms, form a 5- or 6-member aromatic or saturated annelled ring, and its physiologically tolerable salts.