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发明人王建平,林芳,李文辉. "A Process for Preparing High-Purity 2-(Difluoromethyl)-3-hydroxy-6-(trifluoromethyl)pyridine-5-acetic acid" [P]. 中国发明专利, 专利号 CN 115105330 B, 授权公告日 2018-06-21.
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