Nielsen H, Martínez F, Sørensen M. "一种的合成方法" [P]. European Patent, EP 3915845 A1, 2025-04-19.
Mueller T, Brown S R, Schröder R. "Method for the Synthesis of 6-methoxybenzofuran-2-carboxylic acid" [P]. US Patent, US 9465047 B2, 2025-12-14.
Rossi M, Lefèvre J P, Johansson L. "A Process for Preparing High-Purity 6-methoxybenzofuran-2-carboxylic acid" [P]. European Patent, EP 3164689 A1, 2016-11-27.
参考文献 Literature
Fischer P, Wagner E. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2011, 1438, (6), 2569-2598.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chromatographia, 2016, 2238, 7703-7726.
O'Brien K, Kennedy M L. "Identification and Structural Characterization of a Novel Degradation Product of 6-methoxybenzofuran-2-carboxylic acid Using HRMS and NMR". Biomed. Chromatogr., 2020, 1561, 6318-6323.