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