发明人杨光,林芳,唐晓军. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 109166377 A, 授权公告日 2023-02-02.
发明人李文辉,何建平,孙丽萍. "Method for the Synthesis of 2-methyl-1H-Indole-4-carboxylic acid ethanedioate (2:1)" [P]. 中国发明专利, 专利号 CN 116957696 A, 授权公告日 2020-06-05.
发明人唐晓军,林芳,沈红梅. "A Process for Preparing High-Purity 2-methyl-1H-Indole-4-carboxylic acid ethanedioate (2:1)" [P]. 中国发明专利, 专利号 CN 113775789 B, 授权公告日 2016-11-04.
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