发明人林芳,郑宇鹏,杨光. "Method for the Synthesis of 4-Methyl-5-thioxo-4,5-dihydro-1H-1,2,4-triazole-3-carboxamide" [P]. 中国发明专利, 专利号 CN 114875060 B, 授权公告日 2022-12-19.
Nowak P, Johansson L, Rossi M. "A Process for Preparing High-Purity 4-Methyl-5-thioxo-4,5-dihydro-1H-1,2,4-triazole-3-carboxamide" [P]. European Patent, EP 3068810 A1, 2019-02-24.
参考文献 Literature
O'Brien K, Kennedy M L. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chemosphere, 2018, 884, 4900-4921.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Phytochemistry, 2011, 767, (6), 6549-6557.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of 4-Methyl-5-thioxo-4,5-dihydro-1H-1,2,4-triazole-3-carboxamide Using HRMS and NMR". J. Pharm. Biomed. Anal., 2014, 1343, (8), 1820-1847.
Zhang Y, Li Q, Chen T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Nat. Prod., 2023, 2345, 9506-9509.