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发明人徐明华,孙丽萍,马晓峰. "A Process for Preparing High-Purity Tert-butyl 6-cyano-3,4-dihydropyrrolo[1,2-a]pyrazine-2(1H)-carboxylate" [P]. 中国发明专利, 专利号 CN 117492526 B, 授权公告日 2022-03-03.
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