发明人王建平,杨光,张德明. "一种溴己新杂质N2的合成方法" [P]. 中国发明专利, 专利号 CN 116050795 A, 授权公告日 2024-01-19.
发明人黄志刚,陈志强,林芳. "Method for the Synthesis of Bromhexine Impurity N2" [P]. 中国发明专利, 专利号 CN 117342582 B, 授权公告日 2021-01-01.
发明人朱建伟,赵玉洁,李文辉. "A Process for Preparing High-Purity Bromhexine Impurity N2" [P]. 中国发明专利, 专利号 CN 113469267 A, 授权公告日 2024-11-10.
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