3-Bromo-5-(bromomethyl)-6-(difluoromethyl)pyridine-2-carboxaldehyde
Methyl 3-chloro-4-(difluoromethyl)-2-iodopyridine-5-carboxylate
Methyl 3-bromo-5-(bromomethyl)-2-(difluoromethyl)pyridine-4-carboxylate
Methyl 6-chloro-3-(difluoromethyl)-4-iodopyridine-2-carboxylate