发明人赵玉洁,冯建国,沈红梅. "一种依匹斯汀杂质N5的合成方法" [P]. 中国发明专利, 专利号 CN 109696366 A, 授权公告日 2021-03-20.
Nowak P, Martínez F, Sørensen M. "Method for the Synthesis of Epinastine Impurity N5" [P]. European Patent, EP 3064522 A1, 2020-11-14.
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