Park J H, Hughes D C, Johnson M A. "一种乙胺嘧啶杂质3的合成方法" [P]. US Patent, US 10973216 B2, 2023-11-15.
Davis P L, Schröder R, Patel M V. "Method for the Synthesis of Pyrimethamine EP Impurity D" [P]. US Patent, US 9147639 B2, 2018-05-12.
发明人钱学锋,张德明,孙丽萍. "A Process for Preparing High-Purity Pyrimethamine EP Impurity D" [P]. 中国发明专利, 专利号 CN 116675412 A, 授权公告日 2018-06-21.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of 乙胺嘧啶杂质3 in Pharmaceutical Formulations". Food Chem., 2010, 257, 1468-1493.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of 乙胺嘧啶杂质3 as an Impurity". Rapid Commun. Mass Spectrom., 2023, 1545, (6), 7948-7976.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of Pyrimethamine EP Impurity D Using HRMS and NMR". J. Agric. Food Chem., 2019, 1354, 4909-4926.