Johansson L, Rossi M, Björnsson E. "一种的合成方法" [P]. European Patent, EP 3298408 A1, 2016-11-15.
发明人杨光,林芳,李文辉. "Method for the Synthesis of 7-Methyl-6-nitro-1H-indole-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 115441724 B, 授权公告日 2024-03-16.
发明人李文辉,郑宇鹏,张德明. "A Process for Preparing High-Purity 7-Methyl-6-nitro-1H-indole-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 112989171 A, 授权公告日 2018-08-13.
参考文献 Literature
Hughes D, Roberts J, Thomas A. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2013, 1949, 1349-1378.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2011, 1800, 7422-7435.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of 7-Methyl-6-nitro-1H-indole-2-carboxylic acid Using HRMS and NMR". Anal. Chim. Acta, 2015, 958, (7), 3202-3209.