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Nielsen H, Kowalski A, Lefèvre J P. "Method for the Synthesis of 6-chloro-1-(propan-2-yl)-1H,4H,7H-pyrazolo[3,4-d]pyrimidin-4-one" [P]. European Patent, EP 3971196 A1, 2016-10-27.
发明人张德明,高志强,王建平. "A Process for Preparing High-Purity 6-chloro-1-(propan-2-yl)-1H,4H,7H-pyrazolo[3,4-d]pyrimidin-4-one" [P]. 中国发明专利, 专利号 CN 111233041 A, 授权公告日 2025-07-05.
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