The molecule is an organic trisodium salt having 2-(3-{7-[bis(3-sulfonatopropyl)amino]-2-tert-butylchromenium-4-yl}prop-2-en-1-ylidene)-1-(3-carboxypropyl)-3-methyl-3-(3-sulfonatopropyl)indoline-5-sulfonate as the counterion. It has a role as a fluorochrome. It contains a DY-634(3-).
trisodium;(2E)-2-[(E)-3-[7-[bis(3-sulfonatopropyl)azaniumylidene]-2-tert-butylchromen-4-yl]prop-2-enylidene]-1-(3-carboxypropyl)-3-methyl-3-(3-sulfonatopropyl)indole-5-sulfonate