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