Lee S K, Williams B T, O'Brien P Q. "一种的合成方法" [P]. US Patent, US 11788740 B2, 2025-12-05.
Kowalski A, Martínez F, Nowak P. "Method for the Synthesis of 4-(3,4-Dimethoxyphenyl)-2,4-dioxobutanoic acid" [P]. European Patent, EP 3847614 A1, 2020-06-22.
参考文献 Literature
Mueller T, Schmidt R K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2020, 2375, 1749-1777.
Kim S H, Park J Y. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Sci. Total Environ., 2023, 367, (1), 2922-2946.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of 4-(3,4-Dimethoxyphenyl)-2,4-dioxobutanoic acid Using HRMS and NMR". Talanta, 2020, 1159, (12), 7703-7720.
Yamamoto K, Tanaka H, Suzuki T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chim. Acta, 2025, 1813, 6740-6744.