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