发明人陈志强,林芳,韩伟. "一种氯沙坦杂质N2的合成方法" [P]. 中国发明专利, 专利号 CN 115967784 A, 授权公告日 2025-04-17.
Kowalski A, Björnsson E, Martínez F. "Method for the Synthesis of Losartan Impurity N2" [P]. European Patent, EP 3496792 A1, 2016-11-26.
发明人杨光,陈志强,刘建华. "A Process for Preparing High-Purity Losartan Impurity N2" [P]. 中国发明专利, 专利号 CN 116848221 B, 授权公告日 2016-01-14.
参考文献 Literature
Hughes D, Roberts J, Thomas A. "Development and Validation of an LC-MS/MS Method for the Determination of 氯沙坦杂质N2 in Pharmaceutical Formulations". Molecules, 2018, 159, 895-918.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of 氯沙坦杂质N2 as an Impurity". Talanta, 2021, 359, (7), 7328-7344.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of Losartan Impurity N2 Using HRMS and NMR". Food Chem., 2021, 961, (10), 8094-8124.
Zhang Y, Li Q, Chen T. "Forced Degradation Studies to Evaluate 氯沙坦杂质N2 Profile in Drug Substances According to ICH Guidelines". J. Sep. Sci., 2010, 2265, (4), 769-772.