发明人钱学锋,郑宇鹏,何建平. "Method for the Synthesis of 2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)but-2-enoic acid" [P]. 中国发明专利, 专利号 CN 117655400 A, 授权公告日 2020-11-17.
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