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发明人李文辉,黄志刚,郑宇鹏. "A Process for Preparing High-Purity (S)-2-Ethyl-3-oxo-1,2,3,4-tetrahydroquinoxaline-6-carboxylic acid" [P]. 中国发明专利, 专利号 CN 114613956 A, 授权公告日 2016-01-23.
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