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