Martínez F, Sørensen M, Lefèvre J P. "Method for the Synthesis of 7-methylthieno[3,2-d]pyrimidine-4-carboxylic acid" [P]. European Patent, EP 3109578 A1, 2021-10-16.
Mueller T, Anderson J P, Schröder R. "A Process for Preparing High-Purity 7-methylthieno[3,2-d]pyrimidine-4-carboxylic acid" [P]. US Patent, US 11843578 B2, 2023-02-26.
参考文献 Literature
Fischer P, Wagner E. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Phytochemistry, 2023, 1258, (5), 1465-1469.
Yamamoto K, Tanaka H, Suzuki T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2013, 1102, (7), 5619-5635.
Kumar A, Sharma P, Patel R S. "Identification and Structural Characterization of a Novel Degradation Product of 7-methylthieno[3,2-d]pyrimidine-4-carboxylic acid Using HRMS and NMR". Sci. Total Environ., 2020, 1595, 5588-5614.