Roberts E F, Williams B T, Patel M V. "一种的合成方法" [P]. US Patent, US 9389075 B2, 2017-04-26.
Klinger H, Johnson M A, Williams B T. "Method for the Synthesis of Methyl 4-hydroxy-1H-indole-6-carboxylate" [P]. US Patent, US 10618030 B2, 2022-05-22.
Mueller T C, Sørensen M, Nielsen H. "A Process for Preparing High-Purity Methyl 4-hydroxy-1H-indole-6-carboxylate" [P]. European Patent, EP 3525878 A1, 2023-05-10.
参考文献 Literature
Yang F, Sun W, Liu J. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Sep. Sci., 2025, 1907, (5), 4242-4270.
Kim S H, Park J Y. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Methods, 2022, 2219, (4), 7988-7993.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of Methyl 4-hydroxy-1H-indole-6-carboxylate Using HRMS and NMR". Environ. Sci. Technol., 2010, 200, (12), 3761-3772.
Kumar A, Sharma P, Patel R S. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Agric. Food Chem., 2017, 639, 5255-5259.