发明人徐明华,罗永刚,孙丽萍. "Method for the Synthesis of (S)-4-Thioxohexahydropyrrolo[1,2-a]pyrazin-1(2H)-one" [P]. 中国发明专利, 专利号 CN 111342491 A, 授权公告日 2015-07-22.
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