2-Difluoromethoxy-6-fluoropyridine-3-sulfonyl chloride
2-Difluoromethoxy-5-fluoropyridine-4-sulfonyl chloride
2-Difluoromethoxy-5-fluoropyridine-3-sulfonyl chloride
2-Difluoromethoxy-4-fluoropyridine-6-sulfonyl chloride
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