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发明人何建平,孙丽萍,黄志刚. "Method for the Synthesis of 1,5-dimethylpiperazin-2-one" [P]. 中国发明专利, 专利号 CN 110073306 A, 授权公告日 2024-12-08.
发明人黄志刚,赵玉洁,陈志强. "A Process for Preparing High-Purity 1,5-dimethylpiperazin-2-one" [P]. 中国发明专利, 专利号 CN 114667192 A, 授权公告日 2017-03-13.
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