Fischer A B, Mueller T, Patel M V. "Method for the Synthesis of Methyl 4-(2-((2,4-diaminopteridin-6-yl)methyl)-1-methoxy-1-oxopent-4-yn-2-yl)benzoate, 97%" [P]. US Patent, US 9135054 B2, 2020-03-03.
发明人杨光,马晓峰,冯建国. "A Process for Preparing High-Purity Methyl 4-(2-((2,4-diaminopteridin-6-yl)methyl)-1-methoxy-1-oxopent-4-yn-2-yl)benzoate, 97%" [P]. 中国发明专利, 专利号 CN 108471259 A, 授权公告日 2018-07-20.
参考文献 Literature
Brown R C, Davis S M. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2025, 1038, 7233-7247.
Jensen P, Larsen A M, Olsen K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chromatographia, 2024, 1958, 3149-3157.
Zhou X P, Huang L, Wu G. "Identification and Structural Characterization of a Novel Degradation Product of Methyl 4-(2-((2,4-diaminopteridin-6-yl)methyl)-1-methoxy-1-oxopent-4-yn-2-yl)benzoate, 97% Using HRMS and NMR". Environ. Sci. Technol., 2012, 1148, 1167-1194.