Patent ID: 8715529

Claim:
A fluorescent composition having Formula I, or its enantiomer, diastereomer, stereoisomer, and pharmaceutical salt thereof, wherein Formula I is: wherein, R 1 and R 2 are independently selected from H, linear or branched carbon chain or ring, optionally substituted with F, Cl, Br, I, C 1 to C 27 carbon substituted compound, alcohol, thiol, phenol, ether, epoxide, aldehyde, ketone, carboxylic acid, acyl halide, acid anhydride, ester, amide, alkyne, alkene, alkyl halide, aryl halide, amine, azide, nitrile, nitro compound, sulfide, sulfoxide, sulfone, sulfonate, sulfoximine, urea, carbamate, maleimide, triazole, tetrazine, isothiocyanate, thiourea, carbocyclic compound, heterocyclic compound, heterocyclic aromatic compound, aromatic compound; R 3 , R 4 , R 5 , and R 6 are independently selected from H, F, Cl, Br, I, alcohol, thiol, phenol, ether, epoxide, aldehyde, ketone, carboxylic acid, acyl halide, acid anhydride, ester, amide, alkyne, alkene, alkyl halide, aryl halide, amine, azide, nitrile, nitro compound, thiol, sulfide, sulfoxide, sulfone, sulfonate, sulfoximine, urea, carbamate, maleimide, triazole, tetrazine, isothiocyanate, thiourea, linear or branched carbon chain or ring, the carbon chain or ring optionally substituted with F, Cl, Br, I or a C 1 to C 27 carbon substituted compound, acyl, heterocyclic compound, heterocyclic aromatic compound, aromatic compound, enol, enolate, ester enolate, amide; wherein R 1 is not phenyl or 4-(thiophen-2-yl)phenyl; wherein R 2 is not phenyl or 4-(thiophen-2-yl)phenyl; and wherein R 5 is not Br or 4-phenyl-1H-1,2,3-triazol-1-yl.