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发明人张德明,刘建华,钱学锋. "A Process for Preparing High-Purity 7-Boc-3-oxa-7-azabicyclo[3.3.1]nonan-9-one" [P]. 中国发明专利, 专利号 CN 114943751 A, 授权公告日 2020-06-13.
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