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