4-Cyano-3-methoxy-2-(trifluoromethoxy)pyridine-6-acetic acid
4-Cyano-2-methoxy-6-(trifluoromethoxy)pyridine-3-acetonitrile
5-Chloro-2-(chloromethyl)-4-(trifluoromethoxy)pyridine-3-acetonitrile
4-Chloro-5-(chloromethyl)-2-(trifluoromethoxy)pyridine-3-acetonitrile