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发明人黄志刚,林芳,郑宇鹏. "A Process for Preparing High-Purity 6-Imino-1,9-dimethyl-7,9-dihydro-1H-purin-8(6H)-one" [P]. 中国发明专利, 专利号 CN 114677847 A, 授权公告日 2021-07-03.
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