.beta.-Mercaptonaphthalene .beta.-Naphthalenethiol .beta.-Naphthyl mercaptan .beta.-Thionaphthol 2-Mercaptonaphthalene 2-Naphthalenethiol 2-Naphthyl mercaptan 2-Naphthyl thiol 2-Thionaphthol 91-60-1 NSC4749 Naphthalene-2-thiol RPA 2 Renacit 1 Rpa no. 2 Thio-.beta.-naphthol Thionaphthol Usaf cy-4 Vulcamel TBN WLN: L66J CSH