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