The molecule is the anionic form of a fluorescent dye derived from a 3,6-diaminoxanthenium-4,5-disulphate. It has a role as a fluorochrome. It is an organosulfonate oxoanion and a xanthene dye. It derives from a fluorescin.
3-(3-amino-6-imino-4,5-disulfonatoxanthen-9-yl)-4-carboxybenzoate