Williams B T, Stevens L M, O'Brien P Q. "一种的合成方法" [P]. US Patent, US 11827178 B2, 2017-02-25.
O'Brien P Q, Davis P L, Fischer A B. "Method for the Synthesis of Ethyl Indole-5-carboxylate" [P]. US Patent, US 10580668 B2, 2018-10-08.
参考文献 Literature
Fischer P, Wagner E. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Phytochemistry, 2016, 1640, 804-813.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2014, 2019, 333-343.
Hughes D, Roberts J, Thomas A. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl Indole-5-carboxylate Using HRMS and NMR". J. Chromatogr. A, 2014, 1963, (5), 4497-4501.
Brown R C, Davis S M. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Biomed. Chromatogr., 2014, 185, (4), 6490-6514.