发明人徐明华,周伟,钱学锋. "Method for the Synthesis of 2-(5-Chloro-2-oxo-2,3-dihydro-1h-indol-3-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 115747788 A, 授权公告日 2015-11-12.
发明人何建平,陈志强,冯建国. "A Process for Preparing High-Purity 2-(5-Chloro-2-oxo-2,3-dihydro-1h-indol-3-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 109606445 A, 授权公告日 2022-06-18.
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