1,1'-Thiobis(2-naphthol) 1,1'-Thiodi-beta-naphthol 1,1-Thiobis(beta-naphthol) 17096-15-0 2-Naphthalenol, 1,1'-thiobis- 2-Naphthol, 1,1'-thiodi- (8CI) Bis(2-hydroxy-1-naphthyl) sulfide EINECS 241-166-6 NSC 11877