发明人李文辉,刘建华,郑宇鹏. "Method for the Synthesis of 4-(6-Chloropyrazin-2-yl)piperazin-2-one" [P]. 中国发明专利, 专利号 CN 112950147 B, 授权公告日 2022-05-18.
发明人刘建华,李文辉,朱建伟. "A Process for Preparing High-Purity 4-(6-Chloropyrazin-2-yl)piperazin-2-one" [P]. 中国发明专利, 专利号 CN 108144847 A, 授权公告日 2016-03-09.
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