Hughes D C, Stevens L M, Anderson J P. "一种的合成方法" [P]. US Patent, US 11444654 B2, 2021-11-18.
发明人王建平,韩伟,李文辉. "Method for the Synthesis of 5-Hydroxy-3-[2-(4-methoxy-phenyl)-2-oxo-ethylidene]-3,4-dihydro-1H-quinoxalin-2-one" [P]. 中国发明专利, 专利号 CN 109090485 B, 授权公告日 2024-08-26.
发明人林芳,郭海燕,杨光. "A Process for Preparing High-Purity 5-Hydroxy-3-[2-(4-methoxy-phenyl)-2-oxo-ethylidene]-3,4-dihydro-1H-quinoxalin-2-one" [P]. 中国发明专利, 专利号 CN 117805110 B, 授权公告日 2021-03-17.
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