6-(Bromomethyl)-2-cyano-4-(trifluoromethoxy)pyridine-3-acetic acid
3-Cyano-2-(fluoromethyl)-6-(trifluoromethoxy)pyridine-5-acetonitrile
6-Cyano-2-(fluoromethyl)-3-(trifluoromethoxy)pyridine-4-acetonitrile
3-Cyano-6-(fluoromethyl)-2-(trifluoromethoxy)-4-(trifluoromethyl)pyridine