83293-51-0 | 3-[[4-[(2,4-Diaminophenyl)azo]phenyl]azo]-6-[(2,4-diamino-5-sulfophenyl)azo]-4-hydroxy-2-naphthalenesulfonic acid disodium salt | 3-[[4-[(2,4-Diaminophenyl)azo]phenyl]azo]-6-[(2,4-diamino-5-sulfophenyl)azo]-4-hydroxy-2-naphthalenesulfonic acid disodium salt |