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