发明人林芳,周伟,朱建伟. "Method for the Synthesis of 8-Ethyl-4-oxo-1,4-dihydrocinnoline-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111340233 B, 授权公告日 2018-04-08.
发明人郭海燕,陈志强,刘建华. "A Process for Preparing High-Purity 8-Ethyl-4-oxo-1,4-dihydrocinnoline-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 115084180 B, 授权公告日 2018-12-08.
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