发明人周伟,钱学锋,陈志强. "Method for the Synthesis of Urapidil Impurity 12" [P]. 中国发明专利, 专利号 CN 116016472 A, 授权公告日 2023-10-22.
Roberts E F, Brown S R, Schröder R. "A Process for Preparing High-Purity Urapidil Impurity 12" [P]. US Patent, US 9650575 B2, 2023-11-17.
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 乌拉地尔杂质12 in Pharmaceutical Formulations". Molecules, 2025, 1754, 606-636.
Brown R C, Davis S M. "A Stability-Indicating HPLC Method for the Separation and Quantification of 乌拉地尔杂质12 as an Impurity". J. Pharm. Biomed. Anal., 2020, 1675, (2), 7281-7311.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of Urapidil Impurity 12 Using HRMS and NMR". J. Chromatogr. A, 2013, 911, 3223-3253.