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发明人徐明华,张德明,周伟. "Method for the Synthesis of ethyl 3-amino-2,5-dimethyl-4-oxo-3H,4H-thieno[2,3-d]pyrimidine-6-carboxylate" [P]. 中国发明专利, 专利号 CN 109476687 B, 授权公告日 2021-03-17.
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