Patent ID: 6734310
Filing Date: 2004-05-11
Classification: C09B

Abstract:
A cyanine dye, with a combination of sulphoaryl groups, alkyl substituents in the meso position of the methine chain and at least one reactive group which permits binding to biomolecules, said cyanine dye having one of the general structures: wherein n is 1 or 2, R1 is CH3 or C2H5, R2 and R3 are H, SO3M or the four CH groups required to complete a benzene ring or the four CH groups required to complete a benzene ring including (SO3M)n, whereby M is H, Na or K, and R4 and R5 denote equally or differently from another alkyl with 1 to 4 carbon atoms, sulpho alkyl with 2 to 4 carbon atoms, carboxy alkyl with 2 to 6 carbon atoms or hydroxy alkyl with 2 to 6 carbon atoms.