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