Ethyl 6-bromo-2-(bromomethyl)-4-(difluoromethyl)pyridine-3-carboxylate
Ethyl 2-bromo-6-(bromomethyl)-3-(difluoromethyl)pyridine-5-carboxylate
3-Bromo-4-(chloromethyl)-6-(difluoromethyl)pyridine-2-carboxaldehyde
3-Bromo-4-(chloromethyl)-5-(difluoromethyl)pyridine-2-carboxaldehyde