发明人刘建华,胡光,马晓峰. "Method for the Synthesis of Imidafenacin Impurity 1" [P]. 中国发明专利, 专利号 CN 115982647 B, 授权公告日 2015-04-17.
发明人郑宇鹏,黄志刚,郭海燕. "A Process for Preparing High-Purity Imidafenacin Impurity 1" [P]. 中国发明专利, 专利号 CN 117951138 B, 授权公告日 2021-07-17.
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