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