发明人张德明,朱建伟,胡光. "Method for the Synthesis of Methyl 5-oxo-5,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidine-7-carboxylate" [P]. 中国发明专利, 专利号 CN 109360973 B, 授权公告日 2018-11-18.
发明人郭海燕,孙丽萍,胡光. "A Process for Preparing High-Purity Methyl 5-oxo-5,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidine-7-carboxylate" [P]. 中国发明专利, 专利号 CN 116272158 B, 授权公告日 2022-04-12.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chem., 2013, 1601, (8), 6510-6517.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Sci. Total Environ., 2017, 562, 9999-10021.
Kumar A, Sharma P, Patel R S. "Identification and Structural Characterization of a Novel Degradation Product of Methyl 5-oxo-5,8-dihydro-[1,2,4]triazolo[4,3-a]pyrimidine-7-carboxylate Using HRMS and NMR". J. Agric. Food Chem., 2011, 483, (10), 3620-3635.