Mueller T, Williams B T, Klinger H. "一种的合成方法" [P]. US Patent, US 10576867 B2, 2021-05-05.
Nielsen H, Schröder R, Lefèvre J P. "Method for the Synthesis of Methyl 6-((4-nitrophenyl)amino)-5-oxo-1,2,3,5-tetrahydroindolizine-8-carboxylate" [P]. European Patent, EP 3878210 A1, 2025-08-10.
Yamamoto T, Chen K W, Schröder R. "A Process for Preparing High-Purity Methyl 6-((4-nitrophenyl)amino)-5-oxo-1,2,3,5-tetrahydroindolizine-8-carboxylate" [P]. US Patent, US 9605925 B2, 2020-04-02.
参考文献 Literature
Jensen P, Larsen A M, Olsen K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Biomed. Chromatogr., 2020, 1244, (9), 6926-6936.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Sci. Total Environ., 2023, 1979, (9), 1179-1190.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of Methyl 6-((4-nitrophenyl)amino)-5-oxo-1,2,3,5-tetrahydroindolizine-8-carboxylate Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2023, 800, (11), 8434-8462.
Martinez C, Lopez D R. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2020, 547, (8), 831-836.