发明人刘建华,唐晓军,李文辉. "Method for the Synthesis of Hexahydro-1H-pyrazino[1,2-c]pyrimidin-6(2H)-one" [P]. 中国发明专利, 专利号 CN 117852058 A, 授权公告日 2016-04-11.
发明人朱建伟,刘建华,马晓峰. "A Process for Preparing High-Purity Hexahydro-1H-pyrazino[1,2-c]pyrimidin-6(2H)-one" [P]. 中国发明专利, 专利号 CN 112825841 B, 授权公告日 2017-11-06.
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