发明人罗永刚,冯建国,钱学锋. "Method for the Synthesis of 4-Imino-1-(2-methoxy-5-methylphenyl)-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-amine" [P]. 中国发明专利, 专利号 CN 117180977 A, 授权公告日 2021-12-05.
发明人张德明,朱建伟,黄志刚. "A Process for Preparing High-Purity 4-Imino-1-(2-methoxy-5-methylphenyl)-1H-pyrazolo[3,4-d]pyrimidin-5(4H)-amine" [P]. 中国发明专利, 专利号 CN 113178432 B, 授权公告日 2016-04-21.
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