Schröder R, Hughes D C, Davis P L. "一种的合成方法" [P]. US Patent, US 9321389 B2, 2015-10-03.
发明人刘建华,何建平,高志强. "Method for the Synthesis of 2-Methylpyrido[4,3-d][1,3]oxazin-4-one" [P]. 中国发明专利, 专利号 CN 116053508 B, 授权公告日 2025-12-23.
发明人朱建伟,罗永刚,林芳. "A Process for Preparing High-Purity 2-Methylpyrido[4,3-d][1,3]oxazin-4-one" [P]. 中国发明专利, 专利号 CN 115589014 A, 授权公告日 2022-10-18.
参考文献 Literature
O'Brien K, Kennedy M L. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2021, 1519, (8), 4026-4040.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chromatographia, 2024, 1745, 9974-9993.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of 2-Methylpyrido[4,3-d][1,3]oxazin-4-one Using HRMS and NMR". J. Pharm. Biomed. Anal., 2012, 2191, 4902-4920.
Garcia M, Rodriguez P. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Molecules, 2025, 1612, (5), 2817-2841.