发明人张德明,赵玉洁,王建平. "一种酮替芬杂质35的合成方法" [P]. 中国发明专利, 专利号 CN 112718462 A, 授权公告日 2019-02-23.
发明人周伟,朱建伟,孙丽萍. "Method for the Synthesis of Ketotifen Impurity 35" [P]. 中国发明专利, 专利号 CN 115379770 A, 授权公告日 2022-10-05.
发明人陈志强,高志强,周伟. "A Process for Preparing High-Purity Ketotifen Impurity 35" [P]. 中国发明专利, 专利号 CN 116914315 A, 授权公告日 2023-10-20.
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