发明人王建平,黄志刚,沈红梅. "Method for the Synthesis of 1-Ethyl-1-methyl-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 115851879 A, 授权公告日 2020-03-05.
发明人罗永刚,胡光,李文辉. "A Process for Preparing High-Purity 1-Ethyl-1-methyl-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113893875 A, 授权公告日 2015-05-07.
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