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发明人钱学锋,李文辉,王建平. "Method for the Synthesis of N,1-Diethyl-2-imino-5-oxo-2,5-dihydro-1H-dipyrido[1,2-a:2',3'-d]pyrimidine-3-carboxamide" [P]. 中国发明专利, 专利号 CN 110902533 A, 授权公告日 2022-10-14.
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