发明人刘建华,何建平,唐晓军. "Method for the Synthesis of 7-Bromo-3-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidine-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 110665253 A, 授权公告日 2022-10-26.
发明人徐明华,钱学锋,郑宇鹏. "A Process for Preparing High-Purity 7-Bromo-3-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidine-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111533763 B, 授权公告日 2019-08-17.
参考文献 Literature
Brown R C, Davis S M. "Development and Validation of an LC-MS/MS Method for the Determination of 7-溴-3-甲基-4-氧代-4H-吡啶并[1,2-A]嘧啶-2-羧酸 in Pharmaceutical Formulations". Molecules, 2013, 534, 5777-5787.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of 7-溴-3-甲基-4-氧代-4H-吡啶并[1,2-A]嘧啶-2-羧酸 as an Impurity". Anal. Chim. Acta, 2025, 1149, (8), 1464-1468.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of 7-Bromo-3-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidine-2-carboxylic acid Using HRMS and NMR". Food Chem., 2010, 1280, (9), 3069-3091.