C.I. Acid Blue 220

sodium 1-amino-4-[(2,6-diethyl-4-methylphenyl)amino]-9,10-dihydro-9,10-dioxoanthracene-2-sulphonate

1-Amino-4-[(2,6-diethyl-4-methylphenyl)amino]-9,10-dihydro-9,10-dioxo-2-anthracenesulfonic acid sodium salt