发明人李文辉,杨光,韩伟. "Method for the Synthesis of 4-({[3-Methoxy-5-oxo-2(5H)-furanyliden]methyl}amino)benzenecarboxylic acid" [P]. 中国发明专利, 专利号 CN 115872759 A, 授权公告日 2020-12-23.
发明人周伟,罗永刚,郑宇鹏. "A Process for Preparing High-Purity 4-({[3-Methoxy-5-oxo-2(5H)-furanyliden]methyl}amino)benzenecarboxylic acid" [P]. 中国发明专利, 专利号 CN 114351768 A, 授权公告日 2015-01-27.
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