Jørgensen K, Nielsen H, Sørensen M. "一种3,4-dimethoxy-5-propylbenzoic acid的合成方法" [P]. European Patent, EP 3037380 A1, 2024-05-18.
发明人冯建国,周伟,赵玉洁. "Method for the Synthesis of 3,4-dimethoxy-5-propylbenzoic acid" [P]. 中国发明专利, 专利号 CN 117055592 A, 授权公告日 2020-02-23.
发明人林芳,黄志刚,沈红梅. "A Process for Preparing High-Purity 3,4-dimethoxy-5-propylbenzoic acid" [P]. 中国发明专利, 专利号 CN 115251705 A, 授权公告日 2025-03-20.
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