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发明人刘建华,孙丽萍,李文辉. "Method for the Synthesis of Escitalopram EP Impurity K" [P]. 中国发明专利, 专利号 CN 117051949 B, 授权公告日 2019-11-25.
Martínez F, Nowak P, Nielsen H. "A Process for Preparing High-Purity Escitalopram EP Impurity K" [P]. European Patent, EP 3442897 A1, 2017-06-05.
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