Ethyl 5-chloro-4-cyano-2-(difluoromethyl)pyridine-3-carboxylate
2-Chloro-4-(difluoromethyl)-5-fluoropyridine-3-acetonitrile
Ethyl 5-chloro-4-cyano-3-(difluoromethyl)pyridine-2-carboxylate
Ethyl 3-chloro-4-cyano-2-(difluoromethyl)pyridine-6-carboxylate