发明人冯建国,王建平,林芳. "Method for the Synthesis of 6-Methoxychromane-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111105757 B, 授权公告日 2021-12-12.
发明人胡光,郑宇鹏,高志强. "A Process for Preparing High-Purity 6-Methoxychromane-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 110229668 A, 授权公告日 2018-02-20.
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