3-(Chloromethyl)-6-cyano-2-(trifluoromethoxy)pyridine-4-acetic acid
5-(Chloromethyl)-4-cyano-2-(trifluoromethoxy)pyridine-3-acetic acid
5-Fluoro-2-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-4-acetonitrile
4-Fluoro-5-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-2-acetonitrile