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发明人郭海燕,周伟,李文辉. "A Process for Preparing High-Purity tert-Butyl 3-((S)-2-amino-N-ethylpropanamido)pyrrolidine-1-carboxylate" [P]. 中国发明专利, 专利号 CN 115726372 A, 授权公告日 2018-06-01.
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