发明人黄志刚,李文辉,郭海燕. "Method for the Synthesis of Bendamustine Impurity 13" [P]. 中国发明专利, 专利号 CN 111887713 A, 授权公告日 2022-10-10.
发明人徐明华,冯建国,李文辉. "A Process for Preparing High-Purity Bendamustine Impurity 13" [P]. 中国发明专利, 专利号 CN 117512884 B, 授权公告日 2022-02-08.
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