2-Naphthalenesulfonic acid, 6-amino-5-((3-((ethylphenylamino)sulfonyl)-4-methylphenyl)azo)-4-hydroxy-, monosodium salt 2-Naphthalenesulfonic acid, 6-amino-5-((3-(N-ethyl-N-phenylsulfonamido)-4-methylphenyl)azo)-4-hydroxy-, sodium salt 71278-42-7 Benzenesulfonamide, 5-(((2-amino-8-hydroxy-6-sulfo)naphthalene-1-yl)azo)-N-ethyl-2-methyl-N-phenyl-, sodium salt EINECS 275-308-3 Sodium 6-amino-5-((3-((ethylphenylamino)sulphonyl)-4-methylphenyl)azo)-4-hydroxynaphthalene-2-sulphonate