2-Anthraquinone sulfonic acid, 1-amino-4-(4-((3-carboxyphenyl)sulfonyloxy)phenylamino)-, disodium salt 41011-48-7 Benzoic acid, 3-((4-((4-amino-9,10-dihydro-9,10-dioxo-3-sulfo-1-anthracenyl)amino)phenoxy)sulfonyl)-, disodium salt Disodium 3-((4-((4-amino-9,10-dihydro-9,10-dioxo-3-sulphonato-1-anthryl)amino)phenoxy)sulphonyl)benzoate EINECS 255-174-2