3-(Bromomethyl)-4-cyano-2-(trifluoromethoxy)pyridine-5-carboxylic acid
3-Chloro-6-(fluoromethyl)-2-(trifluoromethoxy)pyridine-5-acetonitrile
3-Cyano-5-fluoro-4-(trifluoromethoxy)pyridine-2-acetonitrile
5-Chloro-2-(fluoromethyl)-3-(trifluoromethoxy)pyridine-6-acetonitrile