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