10534-92-6 2-Naphthalenesulfonic acid, 7-(benzoylamino)-4-hydroxy-, monosodium salt (9CI) 2-Naphthalenesulfonic acid, 7-(benzoylamino)-4-hydroxy-, monosodiumsalt EINECS 234-104-4 NSC 37171 Sodium 7-benzamido-4-hydroxynaphthalene-2-sulphonate