2-Naphthalenesulfonic acid, 6-amino-5-((2-((cyclohexylmethylamino)sulfonyl)phenyl)azo)-4-hydroxy-, monosodium salt 32846-21-2 EINECS 251-257-2 Sodium 6-amino-5-((2-((cyclohexylmethylamino)sulphonyl)phenyl)azo)-4-hydroxynaphthalene-2-sulphonate