Williams B T, Fischer A B, Patel M V. "Method for the Synthesis of 5,7-Dichloro-1H-indole-3-carboxylic acid" [P]. US Patent, US 9446057 B2, 2017-05-26.
Nowak P, Johansson L, Björnsson E. "A Process for Preparing High-Purity 5,7-Dichloro-1H-indole-3-carboxylic acid" [P]. European Patent, EP 3496094 A1, 2022-06-03.
参考文献 Literature
O'Brien K, Kennedy M L. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Sep. Sci., 2018, 1487, (9), 6967-6978.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2020, 1453, (2), 5188-5209.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of 5,7-Dichloro-1H-indole-3-carboxylic acid Using HRMS and NMR". Anal. Chim. Acta, 2012, 327, 1709-1728.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Food Chem., 2018, 1210, 6891-6918.