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