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