Chen K W, Williams B T, Yamamoto T. "一种的合成方法" [P]. US Patent, US 11214959 B2, 2024-04-26.
Stevens L M, Klinger H, O'Brien P Q. "Method for the Synthesis of 5-Ethoxy-2-methylbenzofuran-3-carboxylic acid" [P]. US Patent, US 10502141 B2, 2020-02-08.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Methods, 2020, 1817, (3), 1009-1034.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Biomed. Chromatogr., 2020, 1011, (3), 2630-2660.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of 5-Ethoxy-2-methylbenzofuran-3-carboxylic acid Using HRMS and NMR". Environ. Sci. Technol., 2012, 835, (9), 6873-6882.
Fischer P, Wagner E. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Pharm. Biomed. Anal., 2023, 1591, (1), 8470-8498.