发明人沈红梅,赵玉洁,黄志刚. "一种诺氟沙星杂质4的合成方法" [P]. 中国发明专利, 专利号 CN 108422081 A, 授权公告日 2025-09-18.
发明人林芳,何建平,马晓峰. "Method for the Synthesis of Norfloxacin Impurity 4" [P]. 中国发明专利, 专利号 CN 108748546 B, 授权公告日 2023-07-07.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of 诺氟沙星杂质4 in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2017, 407, (4), 2691-2716.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of 诺氟沙星杂质4 as an Impurity". J. Sep. Sci., 2021, 91, (4), 7515-7519.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of Norfloxacin Impurity 4 Using HRMS and NMR". Chromatographia, 2014, 585, (9), 7068-7082.
Kumar A, Sharma P, Patel R S. "Forced Degradation Studies to Evaluate 诺氟沙星杂质4 Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2017, 400, (6), 2532-2553.