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发明人罗永刚,刘建华,郭海燕. "Method for the Synthesis of Ketoprofen Impurity 91" [P]. 中国发明专利, 专利号 CN 116107132 A, 授权公告日 2023-09-06.
Björnsson E, Nowak P, Martínez F. "A Process for Preparing High-Purity Ketoprofen Impurity 91" [P]. European Patent, EP 3998439 A1, 2024-01-24.
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