发明人张德明,林芳,罗永刚. "Method for the Synthesis of 1-Ethyl-4-piperidin-4-ylpiperazine-2,3-dione" [P]. 中国发明专利, 专利号 CN 115718866 A, 授权公告日 2017-02-11.
发明人高志强,李文辉,林芳. "A Process for Preparing High-Purity 1-Ethyl-4-piperidin-4-ylpiperazine-2,3-dione" [P]. 中国发明专利, 专利号 CN 115701105 A, 授权公告日 2016-09-14.
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