Björnsson E, Martínez F, Nielsen H. "Method for the Synthesis of 5-Chloro-3-ethyl-6-methylbenzofuran-2-carboxylic acid" [P]. European Patent, EP 3679304 A1, 2024-11-03.
Park J H, Brown S R, Chen K W. "A Process for Preparing High-Purity 5-Chloro-3-ethyl-6-methylbenzofuran-2-carboxylic acid" [P]. US Patent, US 9779403 B2, 2019-11-18.
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. Nat. Prod., 2021, 1831, 305-324.
Garcia M, Rodriguez P. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Chromatogr. A, 2018, 2039, 3711-3722.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of 5-Chloro-3-ethyl-6-methylbenzofuran-2-carboxylic acid Using HRMS and NMR". Sci. Total Environ., 2025, 736, 1677-1696.
Yamamoto K, Tanaka H, Suzuki T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Chemosphere, 2015, 1922, 9777-9793.