4-Cyano-3-(difluoromethyl)-5-(trifluoromethoxy)pyridine-2-acetonitrile
6-(Difluoromethyl)-3-fluoro-4-(trifluoromethoxy)pyridine-2-acetonitrile
4-Fluoro-3-hydroxy-5-iodo-2-(trifluoromethoxy)pyridine
5-Fluoro-4-hydroxy-2-iodo-3-(trifluoromethoxy)pyridine