发明人高志强,张德明,黄志刚. "Method for the Synthesis of 2H-Pyrazolo[4,3-d]pyrimidin-7(6H)-one" [P]. 中国发明专利, 专利号 CN 108986991 A, 授权公告日 2022-04-02.
发明人王建平,周伟,钱学锋. "A Process for Preparing High-Purity 2H-Pyrazolo[4,3-d]pyrimidin-7(6H)-one" [P]. 中国发明专利, 专利号 CN 116833984 B, 授权公告日 2024-02-16.
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