2,7-Naphthalenedisulfonic acid, 4-hydroxy-5-amino-3-((4'-((8-hydroxy-6-sulfo-2-amino-7-naphthalenyl)azo))(3,3'-dimethyl)(1,1'-biphenyl)-4-yl)azo-,trisodium salt 2,7-Naphthalenedisulfonic acid, 5-amino-3-((4'-((7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo)-3,3'-dimethyl(1,1'-biphenyl)-4-yl)azo)-4-hydroxy-, trisodium salt 66214-51-5 EINECS 266-251-5 Trisodium 5-amino-3-((4'-((7-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo)-3,3'-dimethyl(1,1'-biphenyl)-4-yl)azo)-4-hydroxynaphthalene-2,7-disulphonate