发明人黄志刚,李文辉,刘建华. "Method for the Synthesis of tert-Butyl 4-(piperidin-3-ylmethyl)piperazine-1-carboxylate - oxalate (2:1)" [P]. 中国发明专利, 专利号 CN 112679426 A, 授权公告日 2020-04-27.
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