2-Bromo-5-cyano-6-(difluoromethyl)pyridine-3-sulfonyl chloride
2-Bromo-4-(chloromethyl)-3-(difluoromethyl)-5-iodopyridine
2-Bromo-3-(chloromethyl)-6-(difluoromethyl)-4-iodopyridine
6-Bromo-3-cyano-4-(difluoromethyl)pyridine-2-sulfonyl chloride
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