Klinger H, Anderson J P, Mueller T. "Method for the Synthesis of Pyrazoloquinolone Impurity 6" [P]. US Patent, US 10339344 B2, 2021-02-13.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of Pyrazoloquinolone杂质6 in Pharmaceutical Formulations". Chemosphere, 2018, 1212, 2154-2163.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of Pyrazoloquinolone杂质6 as an Impurity". Anal. Chem., 2025, 501, (1), 7157-7183.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of Pyrazoloquinolone Impurity 6 Using HRMS and NMR". Anal. Chim. Acta, 2015, 1080, (5), 3315-3329.
Fischer P, Wagner E. "Forced Degradation Studies to Evaluate Pyrazoloquinolone杂质6 Profile in Drug Substances According to ICH Guidelines". J. Nat. Prod., 2023, 2312, 3531-3547.