2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-3-((4'-((4-hydroxy-2-((2-methylphenyl)amino)phenyl)azo)(1,1'-biphenyl)-4-yl)azo)-6-((4-sulfophenyl)azo)-, trisodium salt 6358-80-1 EINECS 228-784-1 Trisodium 4-amino-5-hydroxy-3-((4'-((4-hydroxy-2-((o-tolyl)amino)phenyl)azo)(1,1'-biphenyl)-4-yl)azo)-6-((4-sulphonatophenyl)azo)naphthalene-2,7-disulphonate