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