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发明人朱建伟,罗永刚,徐明华. "A Process for Preparing High-Purity S)-tert-Butyl (2-(2-Cyano-4,4-difluoropyrrolidin-1-yl)-2-oxoethyl)carbamate" [P]. 中国发明专利, 专利号 CN 117737882 A, 授权公告日 2018-03-14.
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