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