6408-90-8 Benzenesulfonic acid, 2-((4-((3-methyl-4-((phenylsulfonyl)oxy)phenyl)azo)phenyl)amino)-5-nitro-, monosodium salt EINECS 229-071-8 Sodium 2-((4-((3-methyl-4-((phenylsulphonyl)oxy)phenyl)azo)phenyl)amino)-5-nitrobenzenesulphonate