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发明人张德明,陈志强,冯建国. "Method for the Synthesis of Ethyl 1-[2,5-dioxo-1-(4-propoxyphenyl)pyrrolidin-3-yl]piperidine-4-carboxylate" [P]. 中国发明专利, 专利号 CN 109595642 A, 授权公告日 2017-07-25.
发明人杨光,李文辉,胡光. "A Process for Preparing High-Purity Ethyl 1-[2,5-dioxo-1-(4-propoxyphenyl)pyrrolidin-3-yl]piperidine-4-carboxylate" [P]. 中国发明专利, 专利号 CN 116758018 A, 授权公告日 2020-12-06.
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