Hughes D C, Chen K W, Yamamoto T. "Method for the Synthesis of 6-(4-Ethoxyphenyl)-2-oxo-1,2,3,6-tetrahydro-4-pyrimidinecarboxylic acid" [P]. US Patent, US 9553240 B2, 2024-06-09.
发明人高志强,胡光,韩伟. "A Process for Preparing High-Purity 6-(4-Ethoxyphenyl)-2-oxo-1,2,3,6-tetrahydro-4-pyrimidinecarboxylic acid" [P]. 中国发明专利, 专利号 CN 110278255 B, 授权公告日 2016-10-04.
参考文献 Literature
Yamamoto K, Tanaka H, Suzuki T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chromatographia, 2015, 1425, (7), 963-976.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Food Chem., 2022, 912, (10), 9193-9216.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of 6-(4-Ethoxyphenyl)-2-oxo-1,2,3,6-tetrahydro-4-pyrimidinecarboxylic acid Using HRMS and NMR". J. Chromatogr. A, 2013, 121, (1), 6554-6565.