Klinger H, Johnson M A, Hughes D C. "一种的合成方法" [P]. US Patent, US 11714900 B2, 2023-10-28.
Schröder R, Kowalski A, Jørgensen K. "Method for the Synthesis of Ethyl 2-oxo-2,5,6,7-tetrahydro-1H-cyclopenta[b]pyridine-3-carboxylate" [P]. European Patent, EP 3498857 A1, 2025-12-09.
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. Nat. Prod., 2012, 1678, 577-600.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Phytochemistry, 2022, 99, (9), 1467-1475.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 2-oxo-2,5,6,7-tetrahydro-1H-cyclopenta[b]pyridine-3-carboxylate Using HRMS and NMR". J. Chromatogr. A, 2019, 1636, (1), 9038-9061.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Sci. Total Environ., 2012, 528, 5275-5305.