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发明人郭海燕,李文辉,冯建国. "A Process for Preparing High-Purity (3R,4S)-4-(4-(dimethylamino)-2,6-difluorophenyl)-2-oxopyrrolidine-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 114171967 A, 授权公告日 2021-02-13.
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