Synonyms: 1-amino-9,10-dihydro-4-[[4-[[(4-methylphenyl)sulphonyl]oxy]phenyl]amino]-9,10-dioxoanthracene-2-sulphonic acid;1-amino-4-[[4-[[(4-methylphenyl)sulfonyl]oxy]phenyl]amino]-9,10-dihydro-9,10-dioxo-2-Anthracenesulfonic acid 1-amino-9,10-dihydro-4-[[4-[[4-methylphenyl]sulfonyloxy]phenyl]amino]-9,10-dioxo-2-Anthracenesulfonic acid;2-Anthracenesulfonic acid, 1-amino-4-[[4-[[(4-methylphenyl) sulfonyl]oxy]phenyl]amino]-9,10-dihydro-9,10 -dioxo-;1-Amino-4-[[4-[[(4-methylphenyl)sulfonyl]oxy]phenyl]amino]-9,10-dihydro-9,10-dioxo-2-anthracenesulfonic acid