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