Martínez F, Schröder R, Sørensen M. "Method for the Synthesis of 2-Methyl-4-oxo-3,4-dihydrothieno[3,2-d]pyrimidine-6-carboxylic acid" [P]. European Patent, EP 3425418 A1, 2025-06-08.
发明人郭海燕,朱建伟,黄志刚. "A Process for Preparing High-Purity 2-Methyl-4-oxo-3,4-dihydrothieno[3,2-d]pyrimidine-6-carboxylic acid" [P]. 中国发明专利, 专利号 CN 114578353 A, 授权公告日 2020-06-04.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Methods, 2022, 216, (8), 9471-9490.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2017, 2111, 2244-2269.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of 2-Methyl-4-oxo-3,4-dihydrothieno[3,2-d]pyrimidine-6-carboxylic acid Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2021, 386, (8), 3310-3325.