发明人李文辉,沈红梅,韩伟. "Method for the Synthesis of 2-Ethyl-2-(([(9h-fluoren-9-ylmethoxy)carbonyl]amino)methyl)butanoic acid" [P]. 中国发明专利, 专利号 CN 110644182 A, 授权公告日 2024-05-05.
发明人钱学锋,郑宇鹏,郭海燕. "A Process for Preparing High-Purity 2-Ethyl-2-(([(9h-fluoren-9-ylmethoxy)carbonyl]amino)methyl)butanoic acid" [P]. 中国发明专利, 专利号 CN 109953686 A, 授权公告日 2019-08-01.
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