5-Quinolinesulfonic acid, 8-hydroxy-7-(1-naphthalenylazo)- 50539-65-6 7-(1-Naphthylazo)-8-hydroxyquinoline-5-sulfonic acid 8-Hydroxy-7-(1-naphthylazo)quinoline-5-sulphonic acid EINECS 256-619-3 NSC 148354 Naphthylazoxine