5-Hydroxy-4-nitro-2-(trifluoromethoxy)pyridine-3-acetonitrile
6-Hydroxy-4-nitro-2-(trifluoromethoxy)pyridine-3-acetonitrile
2-Hydroxy-3-nitro-5-(trifluoromethoxy)pyridine-4-acetonitrile
2-(Chloromethyl)-5-fluoro-6-(trifluoromethoxy)pyridine-3-methanol