发明人胡光,张德明,马晓峰. "Method for the Synthesis of Urapidil Impurity 19" [P]. 中国发明专利, 专利号 CN 108571907 A, 授权公告日 2023-04-25.
发明人朱建伟,高志强,韩伟. "A Process for Preparing High-Purity Urapidil Impurity 19" [P]. 中国发明专利, 专利号 CN 112919948 B, 授权公告日 2017-04-01.
参考文献 Literature
Fischer P, Wagner E. "Development and Validation of an LC-MS/MS Method for the Determination of 乌拉地尔杂质19 in Pharmaceutical Formulations". Chromatographia, 2018, 822, (12), 8879-8905.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of 乌拉地尔杂质19 as an Impurity". Phytochemistry, 2020, 2070, (4), 3745-3752.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of Urapidil Impurity 19 Using HRMS and NMR". Biomed. Chromatogr., 2021, 608, 1898-1909.
Brown R C, Davis S M. "Forced Degradation Studies to Evaluate 乌拉地尔杂质19 Profile in Drug Substances According to ICH Guidelines". J. Agric. Food Chem., 2013, 1300, 8445-8462.