Synonyms: 4-amino-3-[[4'-[(2,4-diaminophenyl)azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonic acid, potassium sodium salt;4-Amino-3-((4'-((2,4-diaminophenyl)azo)-3,3'-dimethoxy(1,1'-biphenyl)-4-yl)azo)-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonic acid, potassium sodium salt;Einecs 282-158-2