发明人李文辉,冯建国,胡光. "Method for the Synthesis of Doxapram Impurity 21" [P]. 中国发明专利, 专利号 CN 114504702 A, 授权公告日 2015-06-23.
参考文献 Literature
Zhang Y, Li Q, Chen T. "Development and Validation of an LC-MS/MS Method for the Determination of 多沙普仑杂质21 in Pharmaceutical Formulations". J. Sep. Sci., 2022, 2068, (7), 6681-6702.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of 多沙普仑杂质21 as an Impurity". Anal. Chem., 2025, 1557, 6470-6499.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of Doxapram Impurity 21 Using HRMS and NMR". Anal. Methods, 2023, 2057, (10), 4996-5007.
O'Brien K, Kennedy M L. "Forced Degradation Studies to Evaluate 多沙普仑杂质21 Profile in Drug Substances According to ICH Guidelines". Environ. Sci. Technol., 2013, 1796, 9882-9903.