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