发明人马晓峰,黄志刚,林芳. "Method for the Synthesis of 2-[1-(2-Hydroxyethyl)-4-oxo-1,4-dihydro-5H-pyrazolo[3,4-d]pyrimidin-5-yl]acetamide" [P]. 中国发明专利, 专利号 CN 111838280 B, 授权公告日 2020-12-23.
发明人沈红梅,杨光,高志强. "A Process for Preparing High-Purity 2-[1-(2-Hydroxyethyl)-4-oxo-1,4-dihydro-5H-pyrazolo[3,4-d]pyrimidin-5-yl]acetamide" [P]. 中国发明专利, 专利号 CN 117818905 A, 授权公告日 2016-07-22.
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