发明人孙丽萍,马晓峰,赵玉洁. "Method for the Synthesis of 4-Cyano-1H-indole-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 108407337 B, 授权公告日 2022-09-03.
Park J H, Brown S R, Roberts E F. "A Process for Preparing High-Purity 4-Cyano-1H-indole-2-carboxylic acid" [P]. US Patent, US 9615819 B2, 2024-08-26.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Food Chem., 2012, 2222, (9), 3373-3393.
Brown R C, Davis S M. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Environ. Sci. Technol., 2010, 1494, (12), 3179-3204.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of 4-Cyano-1H-indole-2-carboxylic acid Using HRMS and NMR". Molecules, 2018, 2133, 7903-7929.
Hughes D, Roberts J, Thomas A. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Sep. Sci., 2024, 2363, (4), 4232-4259.