Benzo[a]phenazinium,9-(diethylamino)-7-(2,6-dimethyl-3-sulfophenyl)-5-[[4-(ethylamino)-5-methyl-2-sulfophenyl]amino]-,inner salt, monosodium salt (9CI); C.I. Acid Blue 121 (7CI); C.I. Acid Blue121, monosodium salt (8CI); C.I. 50310; Novazol Acid Blue GL; Supramin Blue EG;Supramine Blue EG