Ethyl 3-bromo-2-chloro-6-(difluoromethyl)pyridine-5-carboxylate
Ethyl 3-bromo-5-chloro-2-(difluoromethyl)pyridine-4-carboxylate
6-Bromo-4-(chloromethyl)-2-cyano-3-(difluoromethyl)pyridine
Ethyl 5-bromo-4-chloro-3-(difluoromethyl)pyridine-2-carboxylate