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