1-Amino-2-(sodiooxysulfonyl)-4-(4-hydroxyphenylamino)-9,10-anthraquinone

1-Amino-4-(4-hydroxyanilino)-9,10-dioxo-2-anthracenesulfonic acid sodium salt

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

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