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发明人徐明华,刘建华,冯建国. "A Process for Preparing High-Purity (1R,2R)-2-{[(tert-butoxy)carbonyl]amino}cyclobutane-1-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111290120 A, 授权公告日 2017-10-23.
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