发明人周伟,李文辉,杨光. "Method for the Synthesis of 1,3,3,7-Tetramethylindolin-2-one" [P]. 中国发明专利, 专利号 CN 114698885 A, 授权公告日 2019-10-24.
发明人张德明,徐明华,朱建伟. "A Process for Preparing High-Purity 1,3,3,7-Tetramethylindolin-2-one" [P]. 中国发明专利, 专利号 CN 108383118 B, 授权公告日 2024-02-10.
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