发明人冯建国,黄志刚,何建平. "一种乌拉地尔杂质28的合成方法" [P]. 中国发明专利, 专利号 CN 109065319 A, 授权公告日 2022-04-19.
发明人胡光,杨光,冯建国. "Method for the Synthesis of Urapidil Impurity 28" [P]. 中国发明专利, 专利号 CN 116125292 A, 授权公告日 2020-06-05.
发明人郭海燕,韩伟,林芳. "A Process for Preparing High-Purity Urapidil Impurity 28" [P]. 中国发明专利, 专利号 CN 109442769 B, 授权公告日 2020-12-21.
参考文献 Literature
Zhang Y, Li Q, Chen T. "Development and Validation of an LC-MS/MS Method for the Determination of 乌拉地尔杂质28 in Pharmaceutical Formulations". J. Nat. Prod., 2013, 2369, 5904-5920.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of 乌拉地尔杂质28 as an Impurity". J. Sep. Sci., 2013, 583, (5), 9742-9762.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of Urapidil Impurity 28 Using HRMS and NMR". Chemosphere, 2016, 2382, (1), 8364-8391.
Mueller T, Schmidt R K. "Forced Degradation Studies to Evaluate 乌拉地尔杂质28 Profile in Drug Substances According to ICH Guidelines". Anal. Chim. Acta, 2010, 238, (5), 3981-4011.