发明人罗永刚,刘建华,唐晓军. "Method for the Synthesis of 5-Amino-6-benzyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one" [P]. 中国发明专利, 专利号 CN 117555368 A, 授权公告日 2017-07-23.
发明人林芳,何建平,钱学锋. "A Process for Preparing High-Purity 5-Amino-6-benzyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one" [P]. 中国发明专利, 专利号 CN 112698325 B, 授权公告日 2015-11-25.
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