Synonyms: 4',5'-Dibromo-2',7'-dinitrofluorescein Disodium Salt;4',5'-Dibromo-3',6'-dihydroxy-2',7'-dinitrospiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one Disodium Salt;benzoic acid, 2-(4,5-dibromo-6-hydroxy-2,7-dinitro-3-oxo-3H-xanthen-9-yl)-, sodium salt (1:2);C.I. Acid Red 91;Disodium 2-(4,5-dibromo-2,7-dinitro-6-oxido-3-oxo-3H-xanthen-9-yl)benzoate;Eosine I Bluish;Hydroxydibromodinitro-o-carboxyphenylfluorone Sodium;