发明人李文辉,黄志刚,何建平. "Method for the Synthesis of Salmeterol Impurity 4" [P]. 中国发明专利, 专利号 CN 117675135 B, 授权公告日 2019-09-22.
发明人林芳,孙丽萍,冯建国. "A Process for Preparing High-Purity Salmeterol Impurity 4" [P]. 中国发明专利, 专利号 CN 111167323 A, 授权公告日 2015-03-07.
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