2-Bromo-5-(difluoromethyl)-6-iodopyridine-3-carboxylic acid
2-Bromo-6-(difluoromethyl)-3-fluoropyridine-4-sulfonyl chloride
6-Bromo-3-(difluoromethyl)-4-iodopyridine-2-carboxylic acid
2-Bromo-5-(difluoromethyl)-4-fluoropyridine-3-sulfonyl chloride
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