发明人张德明,林芳,郑宇鹏. "Method for the Synthesis of Glycopyrrolate Impurity N13" [P]. 中国发明专利, 专利号 CN 108757813 B, 授权公告日 2024-06-18.
发明人刘建华,张德明,郑宇鹏. "A Process for Preparing High-Purity Glycopyrrolate Impurity N13" [P]. 中国发明专利, 专利号 CN 108478749 A, 授权公告日 2021-10-03.
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