3-Hydroxy-4-nitro-6-(trifluoromethoxy)pyridine-2-acetonitrile
3-Hydroxy-4-nitro-2-(trifluoromethoxy)pyridine-6-acetonitrile
3-Hydroxy-2-nitro-6-(trifluoromethoxy)pyridine-4-acetonitrile
Ethyl 2-(chloromethyl)-3-fluoro-6-(trifluoromethoxy)pyridine-5-carboxylate