Ethyl 4-cyano-3-(difluoromethyl)-2-hydroxypyridine-6-carboxylate
4-Chloro-2-(chloromethyl)-5-(difluoromethyl)pyridine-3-acetonitrile
4-Cyano-5-(difluoromethyl)-3-methoxy-2-(trifluoromethyl)pyridine
3-Chloro-5-(chloromethyl)-4-(difluoromethyl)pyridine-2-acetonitrile