Synonyms: sodium 4-[[3-(acetylamino)-4-methylphenyl]amino]-1-amino-9,10-dihydro-9,10-dioxoanthracene-2-sulphonate;1-Amino-4-(3-acetylamino-4-methylanilino)-9,10-dioxo-9,10-dihydroanthracene-2-sulfonic acid sodium salt;1-Amino-4-[3-(acetylamino)-4-methylanilino]-9,10-dioxoanthracene-2-sulfonic acid sodium salt;4-[[3-(Acetylamino)-4-methylphenyl]amino]-1-amino-9,10-dihydro-9,10-dioxo-2-anthracenesulfonic acid sodium salt