1,4-Benzenedisulfonic acid, 2-((4-((4-((6-((4-aminobenzoyl)amino)-1-hydroxy-3-sulfo-2-naphthalenyl)azo)-2,5-dimethoxyphenyl)azo)-6-sulfo-1-naphthalenyl)azo)-, tetrasodium salt 2-((4-((4-((6-(p-Aminobenzamido)-1-hydroxy-3-sulfo-2-naphthyl)azo)-2,5-dimethyloxyphenyl)azo)-6-sulfo-1-naphthyl)azo)-p-benzenedisulfonic acid, tetrasodium salt 71033-17-5 EINECS 275-147-9 Tetrasodium 2-((4-((4-((6-((4-aminobenzoyl)amino)-1-hydroxy-3-sulphonato-2-naphthyl)azo)-2,5-dimethoxyphenyl)azo)-6-sulphonato-1-naphthyl)azo)benzene-1,4-disulphonate