1-Amino-4-(3-amino-4-sulfoanilino)-9,10-dihydro-9,10-dioxoanthracene-2-sulfonic acid

1-amino-4-(3-amino-4-sulphoanilino)-9,10-dihydro-9,10-dioxoanthracene-2-sulphonic acid

1-amino-4-[(3-amino-4-sulfophenyl)amino]-9,10-dihydro-9,10-dioxo-2-Anthracenesulfonic acid