Lefèvre J P, Martínez F, Jørgensen K. "一种的合成方法" [P]. European Patent, EP 3329528 A1, 2023-03-15.
Brown S R, Patel M V, Klinger H. "Method for the Synthesis of 4-((3-(Ethoxycarbonyl)-7-oxo-4,5,6,7-tetrahydrobenzo[b]thiophen-2-yl)amino)-4-oxobutanoic acid" [P]. US Patent, US 11076982 B2, 2017-07-19.
Björnsson E, Mueller T C, Nielsen H. "A Process for Preparing High-Purity 4-((3-(Ethoxycarbonyl)-7-oxo-4,5,6,7-tetrahydrobenzo[b]thiophen-2-yl)amino)-4-oxobutanoic acid" [P]. European Patent, EP 3236786 A1, 2025-02-23.
参考文献 Literature
Garcia M, Rodriguez P. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chemosphere, 2020, 937, 5688-5712.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Biomed. Chromatogr., 2017, 1797, 6270-6278.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of 4-((3-(Ethoxycarbonyl)-7-oxo-4,5,6,7-tetrahydrobenzo[b]thiophen-2-yl)amino)-4-oxobutanoic acid Using HRMS and NMR". Talanta, 2017, 568, (6), 3263-3272.
Smith J A, Johnson M B. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Sci. Total Environ., 2025, 2138, 8192-8210.