.beta.-Nitroso-.alpha.-naphthol .beta.-Nitrosonaphthol 1-Naphthalenol, 2-nitroso- 1-Naphthol, 2-nitroso- 132-53-6 2-Nitroso-1-naphthol 2-Nitrosonaphthol C.I. 76610 NSC5034 WLN: L66J BQ CNO