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发明人徐明华,何建平,张德明. "Method for the Synthesis of 1-(1-Methyl-1H-pyrazol-4-yl)-2-(1-piperazinyl)-1,2-ethanedione hydrochloride" [P]. 中国发明专利, 专利号 CN 114747664 A, 授权公告日 2021-12-04.
发明人孙丽萍,林芳,黄志刚. "A Process for Preparing High-Purity 1-(1-Methyl-1H-pyrazol-4-yl)-2-(1-piperazinyl)-1,2-ethanedione hydrochloride" [P]. 中国发明专利, 专利号 CN 116569251 B, 授权公告日 2017-07-24.
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