发明人张德明,钱学锋,郑宇鹏. "Method for the Synthesis of Ketoprofen Impurity 33" [P]. 中国发明专利, 专利号 CN 114374024 A, 授权公告日 2025-01-07.
发明人孙丽萍,陈志强,唐晓军. "A Process for Preparing High-Purity Ketoprofen Impurity 33" [P]. 中国发明专利, 专利号 CN 110918339 A, 授权公告日 2025-01-12.
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