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