Brown S R, Park J H, Chen K W. "一种的合成方法" [P]. US Patent, US 11550329 B2, 2022-08-28.
发明人张德明,郑宇鹏,冯建国. "Method for the Synthesis of 2-(4-Cyclopropyl-2,3-dioxo-3,4-dihydropyrazin-1(2H)-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 114969097 B, 授权公告日 2021-08-26.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Molecules, 2013, 2129, 3046-3067.
Kim S H, Park J Y. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chim. Acta, 2012, 2211, (3), 1046-1058.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of 2-(4-Cyclopropyl-2,3-dioxo-3,4-dihydropyrazin-1(2H)-yl)acetic acid Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2017, 444, 3793-3814.
Yamamoto K, Tanaka H, Suzuki T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Phytochemistry, 2021, 1921, 264-280.