发明人罗永刚,郑宇鹏,冯建国. "Method for the Synthesis of Vardenafil Impurity 7" [P]. 中国发明专利, 专利号 CN 112271710 B, 授权公告日 2019-07-26.
发明人高志强,陈志强,韩伟. "A Process for Preparing High-Purity Vardenafil Impurity 7" [P]. 中国发明专利, 专利号 CN 116584294 B, 授权公告日 2022-04-05.
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". Food Chem., 2025, 1608, (9), 6375-6403.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2016, 489, (1), 1556-1567.
Garcia M, Rodriguez P. "Identification and Structural Characterization of a Novel Degradation Product of Vardenafil Impurity 7 Using HRMS and NMR". J. Nat. Prod., 2012, 381, 9839-9850.
Jensen P, Larsen A M, Olsen K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Agric. Food Chem., 2016, 441, 3354-3380.