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发明人孙丽萍,陈志强,沈红梅. "A Process for Preparing High-Purity 2-Chloro-6-(difluoromethyl)-3-hydroxypyridine-4-sulfonamide" [P]. 中国发明专利, 专利号 CN 115486990 B, 授权公告日 2018-09-13.
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