发明人杨光,徐明华,刘建华. "一种2-氯-9-甲基-4-氧代-4H-吡啶并[1,2-a]嘧啶-3-甲醛的合成方法" [P]. 中国发明专利, 专利号 CN 113590689 A, 授权公告日 2018-05-26.
Thompson G K, Patel M V, Mueller T. "Method for the Synthesis of 2-Chloro-9-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carbaldehyde" [P]. US Patent, US 9266241 B2, 2017-09-22.
发明人杨光,林芳,高志强. "A Process for Preparing High-Purity 2-Chloro-9-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carbaldehyde" [P]. 中国发明专利, 专利号 CN 111462689 A, 授权公告日 2025-06-26.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of 2-氯-9-甲基-4-氧代-4H-吡啶并[1,2-a]嘧啶-3-甲醛 in Pharmaceutical Formulations". Talanta, 2010, 778, 6809-6819.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of 2-氯-9-甲基-4-氧代-4H-吡啶并[1,2-a]嘧啶-3-甲醛 as an Impurity". J. Chromatogr. A, 2016, 2082, 7761-7780.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of 2-Chloro-9-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carbaldehyde Using HRMS and NMR". Anal. Chim. Acta, 2012, 1195, (6), 3270-3298.