发明人张德明,徐明华,冯建国. "Method for the Synthesis of 2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-cyclopropyl-4-methoxybutanoic acid" [P]. 中国发明专利, 专利号 CN 109278180 B, 授权公告日 2021-08-10.
发明人黄志刚,何建平,钱学锋. "A Process for Preparing High-Purity 2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-cyclopropyl-4-methoxybutanoic acid" [P]. 中国发明专利, 专利号 CN 110020630 B, 授权公告日 2023-09-20.
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