3-Cyano-4-fluoro-5-(trifluoromethoxy)pyridine-2-acetonitrile
4-Chloro-3-(fluoromethyl)-2-(trifluoromethoxy)pyridine-6-acetonitrile
2-Chloro-5-(chloromethyl)-4-(difluoromethyl)-3-(trifluoromethoxy)pyridine
3-Cyano-2-fluoro-6-(trifluoromethoxy)pyridine-5-acetonitrile