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发明人赵玉洁,孙丽萍,沈红梅. "A Process for Preparing High-Purity 2-(Difluoromethyl)-4-hydroxy-3-(trifluoromethoxy)pyridine-6-acetonitrile" [P]. 中国发明专利, 专利号 CN 108048051 B, 授权公告日 2016-02-22.
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