Synonyms: Benzenesulfonic acid, 2-((9,10-dihydro-4-((4-methylphenyl)amino)-9,10-dioxo-1-anthracenyl)amino)-5-methyl-, ammonium salt (1:1);1-(2-Sulfo-p-toluidino)-4-(p-toluidino)anthraquinone, ammonium salt;Ammonium 4-((9,10-dihydro-9,10-dioxo-4-(p-tolyamino)-1-antryl)amino)toluene-3-sulphonate;Benzenesulfonic acid, 2-((9,10-dihydro-4-((4-methylphenyl)amino)-9,10-dioxo-1-anthracenyl)amino)-5-methyl-, monoammonium salt;5-methyl-2-({4-[(4-methylphenyl)amino]-9,10-dioxo-9,10-dihydroanthracen-1-yl}amino)benzenesulfonic acid ammoniate (1:1)