发明人徐明华,罗永刚,沈红梅. "Method for the Synthesis of (R)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(3,4-difluorophenyl)butanoic acid" [P]. 中国发明专利, 专利号 CN 115925139 A, 授权公告日 2019-04-03.
发明人胡光,赵玉洁,王建平. "A Process for Preparing High-Purity (R)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(3,4-difluorophenyl)butanoic acid" [P]. 中国发明专利, 专利号 CN 110230464 A, 授权公告日 2024-05-27.
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