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