发明人周伟,郭海燕,张德明. "一种酮洛芬杂质56的合成方法" [P]. 中国发明专利, 专利号 CN 111010134 A, 授权公告日 2017-04-03.
Klinger H, Anderson J P, Williams B T. "Method for the Synthesis of Ketoprofen Impurity 56" [P]. US Patent, US 9210895 B2, 2020-10-19.
发明人赵玉洁,胡光,冯建国. "A Process for Preparing High-Purity Ketoprofen Impurity 56" [P]. 中国发明专利, 专利号 CN 116761547 A, 授权公告日 2024-11-01.
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