1-Naphthalenesulfonic acid, 3,3'-[(2,2'-dimethoxy-4,1- biphenyl)bis(azo)]bis[4-amino- 1-Naphthalenesulfonic acid, {3,3'-[(2,2'-dimethoxy-4,1-} {biphenyl)bis(azo)]bis[4-amino-,} disodium salt AIDS-157337 AIDS157337 NSC638361 (SODIUM SALT)