1-(2-Thiazolylazo)-2-naphthol 1-(2-Thiazoylazo)-2-naphthol 1-(Thiazol-2-ylazo)-2-naphthol 1147-56-4 2-Naphthalenol, 1-(2-thiazolylazo)- 2-Naphthol, 1-(2-thiazolylazo)- (8CI) EINECS 214-555-3 NSC 139021