发明人李文辉,何建平,韩伟. "一种3,6-二甲基哌嗪-2-酮盐酸盐的合成方法" [P]. 中国发明专利, 专利号 CN 108615452 A, 授权公告日 2021-01-21.
Yamamoto T, Lee S K, Park J H. "Method for the Synthesis of 3,6-Dimethylpiperazin-2-one hydrochloride" [P]. US Patent, US 11620024 B2, 2019-12-15.
发明人马晓峰,林芳,李文辉. "A Process for Preparing High-Purity 3,6-Dimethylpiperazin-2-one hydrochloride" [P]. 中国发明专利, 专利号 CN 112958865 A, 授权公告日 2022-04-20.
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