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发明人黄志刚,陈志强,刘建华. "Method for the Synthesis of Etilefrine EP Impurity E" [P]. 中国发明专利, 专利号 CN 116142380 A, 授权公告日 2019-10-20.
发明人郭海燕,何建平,沈红梅. "A Process for Preparing High-Purity Etilefrine EP Impurity E" [P]. 中国发明专利, 专利号 CN 108648743 B, 授权公告日 2017-09-09.
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