发明人罗永刚,王建平,冯建国. "Method for the Synthesis of 1-((Tert-butoxycarbonyl)(methyl)amino)-3-methylcyclobutane-1-carboxylic acid" [P]. 中国发明专利, 专利号 CN 110893139 A, 授权公告日 2016-04-09.
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