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发明人马晓峰,周伟,韩伟. "Method for the Synthesis of 5-Amino-1-(4-ethylphenyl)-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one" [P]. 中国发明专利, 专利号 CN 116343272 A, 授权公告日 2017-01-17.
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