发明人黄志刚,孙丽萍,刘建华. "Method for the Synthesis of 4-([(9H-fluoren-9-ylmethoxy)carbonyl]amino)-3,3-difluorobutanoic acid" [P]. 中国发明专利, 专利号 CN 113850892 B, 授权公告日 2023-06-25.
Mueller T C, Sørensen M, Martínez F. "A Process for Preparing High-Purity 4-([(9H-fluoren-9-ylmethoxy)carbonyl]amino)-3,3-difluorobutanoic acid" [P]. European Patent, EP 3304735 A1, 2022-07-24.
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