Lefèvre J P, Kowalski A, Björnsson E. "一种的合成方法" [P]. European Patent, EP 3221602 A1, 2018-05-27.
发明人郑宇鹏,刘建华,沈红梅. "Method for the Synthesis of Ethyl 8-carbamoyl-4-methylene-1,4-dihydroimidazo[5,1-c][1,2,4]triazine-3-carboxylate" [P]. 中国发明专利, 专利号 CN 115564955 B, 授权公告日 2017-08-19.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Talanta, 2010, 883, 1111-1127.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Biomed. Chromatogr., 2020, 1314, (10), 9783-9798.
Hughes D, Roberts J, Thomas A. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 8-carbamoyl-4-methylene-1,4-dihydroimidazo[5,1-c][1,2,4]triazine-3-carboxylate Using HRMS and NMR". J. Agric. Food Chem., 2015, 2363, (4), 3478-3485.