1,5-Naphthalenedisulfonic acid, 3-((4-((1-hydroxy-6-(phenylamino)-3-sulfo-2-naphthalenyl)azo)-5-methoxy-2-methylphenyl)azo)-, trisodium salt 6227-20-9 EINECS 228-327-6 Trisodium 3-((4-((6-(anilino)-1-hydroxy-3-sulphonato-2-naphthyl)azo)-5-methoxy-o-tolyl)azo)naphthalene-1,5-disulphonate