发明人李文辉,沈红梅,高志强. "Method for the Synthesis of Glycopyrronium Bromide Impurity 7" [P]. 中国发明专利, 专利号 CN 111042185 B, 授权公告日 2018-02-20.
发明人陈志强,郑宇鹏,钱学锋. "A Process for Preparing High-Purity Glycopyrronium Bromide Impurity 7" [P]. 中国发明专利, 专利号 CN 111840366 B, 授权公告日 2017-09-18.
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