发明人李文辉,黄志刚,沈红梅. "Method for the Synthesis of Roxatidine impurity 69" [P]. 中国发明专利, 专利号 CN 110073490 B, 授权公告日 2017-05-07.
发明人林芳,冯建国,王建平. "A Process for Preparing High-Purity Roxatidine impurity 69" [P]. 中国发明专利, 专利号 CN 112694768 A, 授权公告日 2017-07-02.
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