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发明人徐明华,黄志刚,郑宇鹏. "A Process for Preparing High-Purity Ethyl 5-(2,3-dimethoxyphenyl)-5-oxopentanoate" [P]. 中国发明专利, 专利号 CN 109271047 A, 授权公告日 2021-11-18.
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