Nielsen H, Martínez F, Schröder R. "一种的合成方法" [P]. European Patent, EP 3220616 A1, 2017-03-14.
Schröder R, Stevens L M, Chen K W. "Method for the Synthesis of 5,6-Dihydroxy-2-thiophen-2-yl-pyrimidine-4-carboxylic acid" [P]. US Patent, US 9673832 B2, 2023-10-05.
参考文献 Literature
O'Brien K, Kennedy M L. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Agric. Food Chem., 2018, 1850, (11), 669-693.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chromatographia, 2017, 1010, 3054-3070.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of 5,6-Dihydroxy-2-thiophen-2-yl-pyrimidine-4-carboxylic acid Using HRMS and NMR". Biomed. Chromatogr., 2019, 525, 3704-3711.