发明人林芳,陈志强,钱学锋. "Method for the Synthesis of 5-Ethylpyrazolo[1,5-a]pyrimidin-7(4H)-one" [P]. 中国发明专利, 专利号 CN 116879308 B, 授权公告日 2024-10-07.
发明人马晓峰,陈志强,冯建国. "A Process for Preparing High-Purity 5-Ethylpyrazolo[1,5-a]pyrimidin-7(4H)-one" [P]. 中国发明专利, 专利号 CN 117221766 B, 授权公告日 2023-05-06.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Molecules, 2022, 549, 8770-8773.
Jensen P, Larsen A M, Olsen K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2023, 2229, 9788-9800.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of 5-Ethylpyrazolo[1,5-a]pyrimidin-7(4H)-one Using HRMS and NMR". Biomed. Chromatogr., 2014, 1613, (3), 5292-5299.
Martinez C, Lopez D R. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Sci. Total Environ., 2018, 348, 6112-6116.