The molecule is an organic monosodium salt that has 3-(3-carboxypropyl)-2-[5-(9-ethyl-6,8,8-trimethyl-2-phenyl-8,9-dihydropyrano[3,2-g]quinolin-1-ium-4-yl)penta-2,4-dien-1-ylidene]-3-methyl-1-(3-sulfonatopropyl)indoline-5-sulfonate as the counterion. It has a role as a fluorochrome. It contains a DY-776(1-).
sodium;3-(3-carboxypropyl)-2-[(1E,3E,5E)-5-(9-ethyl-6,8,8-trimethyl-2-phenylpyrano[3,2-g]quinolin-4-ylidene)penta-1,3-dienyl]-3-methyl-1-(3-sulfonatopropyl)indol-1-ium-5-sulfonate