2-Fluoro-5-methoxy-6-(trifluoromethoxy)pyridine-3-acetonitrile
2-Chloro-6-(difluoromethyl)-3-(trifluoromethoxy)pyridine-5-acetonitrile
4-(Chloromethyl)-6-fluoro-2-methoxy-3-(trifluoromethoxy)pyridine
6-Chloro-3-(difluoromethyl)-2-(trifluoromethoxy)pyridine-4-acetonitrile