25047-71-6 3-((2-Hydroxy-3-((4-methoxy-o-tolyl)carbamoyl)-1-naphthyl)azo)-4-methoxybenzenesulfonic acid, monosodium salt Benzenesulfonic acid, 3-((2-hydroxy-3-(((4-methoxy-2-methylphenyl)amino)carbonyl)-1-naphthalenyl)azo)-4-methoxy-, monosodium salt EINECS 246-580-0 Sodium 3-((2-hydroxy-3-((4-methoxy-o-tolyl)carbamoyl)-1-naphthyl)azo)-4-methoxybenzenesulphonate