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发明人徐明华,赵玉洁,沈红梅. "A Process for Preparing High-Purity 6-Chloro-5-(chloromethyl)-4-(difluoromethyl)pyridin-3-ol" [P]. 中国发明专利, 专利号 CN 115579769 B, 授权公告日 2020-11-01.
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