2-Bromo-3-(difluoromethyl)-6-methylpyridine-4-sulfonyl chloride
2-Bromo-3-(difluoromethyl)-5-methylpyridine-4-sulfonyl chloride
3-Bromo-2-(chloromethyl)-5-(difluoromethyl)-6-methylpyridine
3-Bromo-6-(difluoromethyl)-2-methylpyridine-5-carbonyl chloride