发明人胡光,高志强,李文辉. "Method for the Synthesis of 2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-2-(3,3-difluorocyclobutyl)acetic acid" [P]. 中国发明专利, 专利号 CN 108507299 B, 授权公告日 2020-07-20.
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