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