83221-37-8 Benzenesulfonamide, 4-((4-((4-(2-hydroxybutoxy)-3-methylphenyl)azo)phenyl)amino)-3-nitro-N-(phenylsulfonyl)-, monosodium salt EINECS 280-215-6 Sodium 4-((4-((4-(2-hydroxybutoxy)-m-tolyl)azo)phenyl)amino)-3-nitro-N-(phenylsulphonyl)benzenesulphonamidate