68959-16-0 EINECS 273-400-8 Ethanesulfonic acid, 2-(((2,5-dichloro-4-((4-(diethylamino)-2-methylphenyl)azo)phenyl)sulfonyl)amino)-, monosodium salt N-(2-Sulfoethyl)-2,5-dichloro-4-((4-(diethylamino)-2-methylphenyl)azo)benzenesulfonamide, sodium salt Sodium 2-(((2,5-dichloro-4-((4-(diethylamino)-2-methylphenyl)azo)phenyl)sulphonyl)amino)ethanesulphonate