4-Bromo-2-(difluoromethyl)-5-methoxypyridine-3-sulfonyl chloride
5-Bromo-4-(difluoromethyl)-3-fluoropyridine-2-sulfonyl chloride
2-Bromo-5-(difluoromethyl)-3-methyl-4-nitropyridine
3-Bromo-2-(difluoromethyl)-6-fluoropyridine-5-sulfonyl chloride
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