发明人徐明华,冯建国,郑宇鹏. "Method for the Synthesis of 6-methanesulfonyl-1H,4H,7H-pyrazolo[3,4-d]pyrimidin-4-one" [P]. 中国发明专利, 专利号 CN 108521071 A, 授权公告日 2022-02-12.
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