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