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发明人孙丽萍,冯建国,李文辉. "Method for the Synthesis of (R)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-(4-ethylphenyl)propanoic acid" [P]. 中国发明专利, 专利号 CN 117047749 A, 授权公告日 2015-09-03.
发明人林芳,马晓峰,黄志刚. "A Process for Preparing High-Purity (R)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-(4-ethylphenyl)propanoic acid" [P]. 中国发明专利, 专利号 CN 113840552 A, 授权公告日 2020-02-09.
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