1-Amino-4-[4-(benzoylamino)anilino]-9,10-dioxoanthracene-2-sulfonic acid sodium salt

sodium 1-amino-4-[[4-(benzoylamino)phenyl]amino]-9,10-dihydro-9,10-dioxoanthracene-2-sulphonate

1-Amino-4-[[4-(benzoylamino)phenyl]amino]-9,10-dihydro-9,10-dioxo-2-anthracenesulfonic acid sodium salt