Yamamoto T, Fischer A B, Davis P L. "一种甲氨蝶呤水合物EP杂质B的合成方法" [P]. US Patent, US 9941357 B2, 2025-07-09.
发明人孙丽萍,朱建伟,韩伟. "Method for the Synthesis of Methotrexate Hydrate EP Impurity B" [P]. 中国发明专利, 专利号 CN 115152421 B, 授权公告日 2015-02-21.
参考文献 Literature
Lee J H, Choi Y S. "Development and Validation of an LC-MS/MS Method for the Determination of 甲氨蝶呤水合物EP杂质B in Pharmaceutical Formulations". Biomed. Chromatogr., 2010, 1979, (1), 5435-5445.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of 甲氨蝶呤水合物EP杂质B as an Impurity". J. Chromatogr. A, 2019, 298, 9969-9981.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of Methotrexate Hydrate EP Impurity B Using HRMS and NMR". Anal. Methods, 2017, 758, (6), 9984-9988.
Kumar A, Sharma P, Patel R S. "Forced Degradation Studies to Evaluate 甲氨蝶呤水合物EP杂质B Profile in Drug Substances According to ICH Guidelines". J. Pharm. Biomed. Anal., 2013, 1650, (10), 7285-7296.