发明人陈志强,郭海燕,马晓峰. "一种头孢唑林杂质P4的合成方法" [P]. 中国发明专利, 专利号 CN 110882200 A, 授权公告日 2024-05-18.
Hughes D C, Stevens L M, Johnson M A. "Method for the Synthesis of Cefazolin Impurity P4" [P]. US Patent, US 10341144 B2, 2015-07-20.
发明人韩伟,罗永刚,孙丽萍. "A Process for Preparing High-Purity Cefazolin Impurity P4" [P]. 中国发明专利, 专利号 CN 112261939 A, 授权公告日 2018-11-03.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of 头孢唑林杂质P4 in Pharmaceutical Formulations". Chromatographia, 2018, 1068, (8), 8959-8984.
Jensen P, Larsen A M, Olsen K. "A Stability-Indicating HPLC Method for the Separation and Quantification of 头孢唑林杂质P4 as an Impurity". Rapid Commun. Mass Spectrom., 2023, 2180, 7798-7826.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of Cefazolin Impurity P4 Using HRMS and NMR". Anal. Methods, 2023, 2283, 6608-6615.