发明人刘建华,孙丽萍,林芳. "Method for the Synthesis of 3-Methyl-1H-indole-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109757677 A, 授权公告日 2020-05-15.
发明人沈红梅,王建平,高志强. "A Process for Preparing High-Purity 3-Methyl-1H-indole-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117331272 B, 授权公告日 2021-06-20.
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