83721-41-9 4-[[4-[[[[5-hydroxy-6-(phenylazo)-7-sulpho-2-naphthyl]amino]carbonyl]amino]-5-methoxy-o-tolyl]azo]-5-[(phenylsulphonyl)oxy]naphthalene-2,7-disulphonic acid, sodium salt
83721-51-1 5,5'-((3,3'-Dimethoxy(1,1'-biphenyl)-4,4'-diyl)bis(azo(2-amino-5-hydroxy-7-sulphonaphthalene-6,1-diyl)azo))bis(1H-1,2,4-triazole-3-carboxylic) acid, ammonium sodium salt