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发明人徐明华,沈红梅,马晓峰. "Method for the Synthesis of (2R)-3-[4-(carbamoylamino)phenyl]-2-(9H-fluoren-9-ylmethoxycarbonylamino)propanoic acid" [P]. 中国发明专利, 专利号 CN 117902611 A, 授权公告日 2025-01-24.
发明人何建平,冯建国,孙丽萍. "A Process for Preparing High-Purity (2R)-3-[4-(carbamoylamino)phenyl]-2-(9H-fluoren-9-ylmethoxycarbonylamino)propanoic acid" [P]. 中国发明专利, 专利号 CN 109249746 B, 授权公告日 2019-02-02.
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