发明人张德明,冯建国,杨光. "Method for the Synthesis of Ivacaftor Impurity 13" [P]. 中国发明专利, 专利号 CN 113115687 B, 授权公告日 2017-12-17.
发明人胡光,韩伟,孙丽萍. "A Process for Preparing High-Purity Ivacaftor Impurity 13" [P]. 中国发明专利, 专利号 CN 109715388 A, 授权公告日 2015-02-02.
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