发明人王建平,钱学锋,郭海燕. "Method for the Synthesis of 1-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-phenylcyclobutane-1-carboxylic acid" [P]. 中国发明专利, 专利号 CN 110697820 B, 授权公告日 2020-10-11.
发明人黄志刚,赵玉洁,郭海燕. "A Process for Preparing High-Purity 1-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-phenylcyclobutane-1-carboxylic acid" [P]. 中国发明专利, 专利号 CN 116292232 A, 授权公告日 2018-01-04.
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