4-(Difluoromethyl)-3-iodo-5-(trifluoromethoxy)pyridine-2-acetonitrile
2-(Chloromethyl)-4-(difluoromethyl)-5-fluoro-3-(trifluoromethoxy)pyridine
5-Fluoro-2-iodo-3-(methylthio)pyridine
2-(Bromomethyl)-3-(difluoromethyl)-6-(trifluoromethoxy)pyridine-4-acetic acid