发明人朱建伟,刘建华,罗永刚. "Method for the Synthesis of 2-(2-Bromophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazin-4(5H)-one" [P]. 中国发明专利, 专利号 CN 110263300 A, 授权公告日 2023-09-18.
发明人黄志刚,韩伟,陈志强. "A Process for Preparing High-Purity 2-(2-Bromophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazin-4(5H)-one" [P]. 中国发明专利, 专利号 CN 116381938 B, 授权公告日 2019-10-10.
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