Johansson L, Kowalski A, Lefèvre J P. "Method for the Synthesis of 4,7-Dichloro-5-fluoro-1H-indole-2-carboxylic acid" [P]. European Patent, EP 3631368 A1, 2025-04-07.
参考文献 Literature
Zhang Y, Li Q, Chen T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2023, 776, (9), 4014-4026.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2012, 717, (5), 6664-6671.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of 4,7-Dichloro-5-fluoro-1H-indole-2-carboxylic acid Using HRMS and NMR". Talanta, 2015, 83, 6926-6952.
Yang F, Sun W, Liu J. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chem., 2014, 2392, 5169-5194.