Chen K W, Yamamoto T, Brown S R. "一种甲硝唑EP杂质B的合成方法" [P]. US Patent, US 9602797 B2, 2023-12-08.
Davis P L, Mueller T, Schröder R. "Method for the Synthesis of Metronidazole EP Impurity B" [P]. US Patent, US 9806336 B2, 2023-06-01.
发明人李文辉,高志强,刘建华. "A Process for Preparing High-Purity Metronidazole EP Impurity B" [P]. 中国发明专利, 专利号 CN 109877371 A, 授权公告日 2019-01-04.
参考文献 Literature
O'Brien K, Kennedy M L. "Development and Validation of an LC-MS/MS Method for the Determination of 甲硝唑EP杂质B in Pharmaceutical Formulations". J. Nat. Prod., 2025, 571, (6), 9135-9141.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of 甲硝唑EP杂质B as an Impurity". Molecules, 2010, 1910, 5259-5268.
Kumar A, Sharma P, Patel R S. "Identification and Structural Characterization of a Novel Degradation Product of Metronidazole EP Impurity B Using HRMS and NMR". Phytochemistry, 2010, 776, (9), 1582-1600.