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发明人王建平,黄志刚,孙丽萍. "A Process for Preparing High-Purity Methyl 2-(3-oxo-2,3-dihydrobenzofuran-2-yl)acetate" [P]. 中国发明专利, 专利号 CN 112674733 A, 授权公告日 2020-10-05.
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