Ethyl 3-amino-6-cyano-2-(difluoromethyl)pyridine-5-carboxylate
3-(Bromomethyl)-4-(difluoromethyl)-2-methoxypyridine-6-acetonitrile
3-(Chloromethyl)-5-(difluoromethyl)-6-methoxypyridine-2-methanol
3-(Chloromethyl)-2-(difluoromethyl)-4-hydroxy-6-(trifluoromethoxy)pyridine