Kowalski A, Sørensen M, Nielsen H. "一种头孢匹胺氧化杂质1的合成方法" [P]. European Patent, EP 3340228 A1, 2016-05-09.
Fischer A B, Roberts E F, Williams B T. "Method for the Synthesis of Cefpiramide Oxide Impurity 1" [P]. US Patent, US 11607286 B2, 2024-05-12.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of 头孢匹胺氧化杂质1 in Pharmaceutical Formulations". Biomed. Chromatogr., 2018, 2180, (12), 1627-1630.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of 头孢匹胺氧化杂质1 as an Impurity". Rapid Commun. Mass Spectrom., 2012, 1585, (6), 7801-7827.
Zhou X P, Huang L, Wu G. "Identification and Structural Characterization of a Novel Degradation Product of Cefpiramide Oxide Impurity 1 Using HRMS and NMR". J. Pharm. Biomed. Anal., 2020, 899, 7951-7959.
Kim S H, Park J Y. "Forced Degradation Studies to Evaluate 头孢匹胺氧化杂质1 Profile in Drug Substances According to ICH Guidelines". J. Nat. Prod., 2011, 482, (2), 8369-8397.