发明人罗永刚,王建平,沈红梅. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 111116245 A, 授权公告日 2018-06-07.
Nielsen H, Björnsson E, Rossi M. "Method for the Synthesis of 4-Hydroxy-2-methyl-1,4-dihydropyrimidine-5-carboxylic acid" [P]. European Patent, EP 3325365 A1, 2017-11-12.
发明人朱建伟,唐晓军,何建平. "A Process for Preparing High-Purity 4-Hydroxy-2-methyl-1,4-dihydropyrimidine-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117765546 B, 授权公告日 2021-05-23.
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". J. Chromatogr. A, 2012, 2383, (6), 1317-1325.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Nat. Prod., 2010, 320, (11), 8555-8568.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of 4-Hydroxy-2-methyl-1,4-dihydropyrimidine-5-carboxylic acid Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2013, 621, (12), 3740-3749.
Jensen P, Larsen A M, Olsen K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Molecules, 2010, 350, 378-389.