Mueller T C, Nowak P, Jørgensen K. "一种的合成方法" [P]. European Patent, EP 3985183 A1, 2024-03-12.
发明人黄志刚,高志强,朱建伟. "Method for the Synthesis of 5-Methyl-7-(methylthio)-4-oxo-3,4-dihydropyrido[4,3-d]pyrimidine-8-carbonitrile" [P]. 中国发明专利, 专利号 CN 110021189 A, 授权公告日 2016-02-03.
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". Food Chem., 2023, 1307, 1497-1522.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Phytochemistry, 2025, 398, (2), 8308-8329.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of 5-Methyl-7-(methylthio)-4-oxo-3,4-dihydropyrido[4,3-d]pyrimidine-8-carbonitrile Using HRMS and NMR". J. Agric. Food Chem., 2013, 2025, (3), 2518-2545.