Kumar R, Lee S K, Klinger H. "一种4-甲氧基噻吩-2-甲酸的合成方法" [P]. US Patent, US 9419562 B2, 2021-10-02.
发明人刘建华,沈红梅,郑宇鹏. "Method for the Synthesis of 4-Methoxythiophene-2-carboxylic Acid" [P]. 中国发明专利, 专利号 CN 111911933 B, 授权公告日 2025-01-08.
发明人黄志刚,朱建伟,马晓峰. "A Process for Preparing High-Purity 4-Methoxythiophene-2-carboxylic Acid" [P]. 中国发明专利, 专利号 CN 112805022 B, 授权公告日 2020-04-19.
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