The molecule is a C7-cyanine dye having differentially-substituted 2-indolyl units at each end. It has a role as a fluorochrome. It derives from a C7-indocyanine.
1-(5-carboxypentyl)-2-[(1E,3E,5E,7Z)-7-(1-ethyl-5-sulfo-3H-indol-2-ylidene)hepta-1,3,5-trienyl]-3H-indol-1-ium-5-sulfonate