Ethyl 3-bromo-4-(chloromethyl)-2-(difluoromethyl)pyridine-6-acetate
3-Bromo-6-(difluoromethyl)-4-iodopyridine-2-sulfonyl chloride
5-Bromo-2-(difluoromethyl)-3-iodopyridine-6-sulfonyl chloride
2-Bromo-3-(difluoromethyl)-6-methoxypyridine-4-carboxaldehyde