The molecule is a xanthene dye that is fluorescein bearing bromine substituents at positions 2', 4', 5' and 7' (on the xanthene ring) and chlorine substituents at position 2, 3, 4, and 5 (on the phenyl ring). The disodium salt is the biological stain 'phloxine B'. It has a role as a fluorochrome. It is an organobromine compound, a member of benzoic acids, a tetrachlorobenzene, a member of phenols and a xanthene dye. It derives from a fluorescein. It is a conjugate acid of a 2',4',5',7'-tetrabromo-2,3,4,5-tetrachlorofluorescein(2-).
2,3,4,5-tetrachloro-6-(2,4,5,7-tetrabromo-3-hydroxy-6-oxoxanthen-9-yl)benzoic acid