42116-76-7 Carbamothioic acid, [2-(2-methyl-5-nitro-1H-imidazol-1-yl)ethyl]-, O-methyl ester Carnidazole NSC293873 O-Methyl [2-(2-methyl-5-nitroimidazol-1-yl)ethyl]thiocarbamate R 25,831 [as the free base] R 28,096 [as hydrochloride]