发明人王建平,刘建华,张德明. "一种布立西坦杂质181的合成方法" [P]. 中国发明专利, 专利号 CN 108537688 A, 授权公告日 2024-08-02.
发明人李文辉,张德明,罗永刚. "Method for the Synthesis of Brivaracetam Impurity 181" [P]. 中国发明专利, 专利号 CN 111837186 A, 授权公告日 2025-04-19.
Stevens L M, Hughes D C, Patel M V. "A Process for Preparing High-Purity Brivaracetam Impurity 181" [P]. US Patent, US 11478789 B2, 2025-04-13.
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