5-(Chloromethyl)-4-fluoro-2-(trifluoromethoxy)pyridine-3-acetonitrile
6-(Bromomethyl)-2-cyano-3-nitro-4-(trifluoromethoxy)pyridine
3-(Chloromethyl)-4-fluoro-5-(trifluoromethoxy)pyridine-2-acetonitrile
2-(Bromomethyl)-6-cyano-4-nitro-3-(trifluoromethoxy)pyridine