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发明人李文辉,冯建国,王建平. "A Process for Preparing High-Purity Ethyl 3-(7-methoxy-4-methyl-2-oxo-2H-chromen-3-yl)propanoate" [P]. 中国发明专利, 专利号 CN 117498323 B, 授权公告日 2020-06-20.
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