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发明人冯建国,何建平,刘建华. "A Process for Preparing High-Purity Methyl 2-(4-oxothieno[3,2-d]pyrimidin-3(4H)-yl)acetate" [P]. 中国发明专利, 专利号 CN 115278012 B, 授权公告日 2023-10-02.
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