The molecule is an organic disodium salt having 3-(3-carboxypropyl)-3-methyl-1-(3-sulfonatopropyl)-2-{3-[6,8,8-trimethyl-2-phenyl-9-(3-sulfonatopropyl)-8,9-dihydropyrano[3,2-g]quinolin-1-ium-4-yl]prop-2-en-1-ylidene}indoline-5-sulfonate as the counterion. It has a role as a fluorochrome. It contains a DY-677(2-).
disodium;3-(3-carboxypropyl)-3-methyl-1-(3-sulfonatopropyl)-2-[(E,3E)-3-[6,8,8-trimethyl-2-phenyl-9-(3-sulfonatopropyl)pyrano[3,2-g]quinolin-4-ylidene]prop-1-enyl]indol-1-ium-5-sulfonate