发明人胡光,林芳,冯建国. "Method for the Synthesis of Vardenafil Impurity 39" [P]. 中国发明专利, 专利号 CN 110302711 B, 授权公告日 2016-11-08.
Patel M V, Klinger H, Lee S K. "A Process for Preparing High-Purity Vardenafil Impurity 39" [P]. US Patent, US 9257679 B2, 2023-11-18.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of 伐地那非杂质39 in Pharmaceutical Formulations". J. Agric. Food Chem., 2019, 1371, (9), 7889-7911.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of 伐地那非杂质39 as an Impurity". Chromatographia, 2021, 295, (11), 799-826.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of Vardenafil Impurity 39 Using HRMS and NMR". Food Chem., 2024, 1287, (8), 5759-5780.
Martinez C, Lopez D R. "Forced Degradation Studies to Evaluate 伐地那非杂质39 Profile in Drug Substances According to ICH Guidelines". J. Sep. Sci., 2012, 498, 9275-9298.