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发明人林芳,高志强,陈志强. "Method for the Synthesis of Ethyl 2-{[2-(4-methoxyphenyl)-4-oxo-4H-chromen-3-yl]oxy}acetate" [P]. 中国发明专利, 专利号 CN 113268194 B, 授权公告日 2015-05-26.
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