2,7-Naphthalenedisulfonic acid, 4-amino-3-((4'-((2,4-diaminophenyl)azo)-3,3'-dimethyl(1,1'-biphenyl)-4-yl)azo)-5-hydroxy-6-(phenylazo)-, disodium salt 37372-50-2 4-Amino-3-((4'-((2,4-diaminophenyl)azo)(1,1'-biphenyl-3,3'-dimethyl)-4-yl)azo)-5-hydroxy-6-(phenylazo)-2,7-naphthalenedisulfonic acid, disodium salt 54804-85-2 79304-42-0 Disodium 4-amino-3-((4'-((2,4-diaminophenyl)azo)-3,3'-dimethyl(1,1'-biphenyl)-4-yl)azo)-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonate EINECS 259-355-7