发明人胡光,韩伟,徐明华. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 116871520 A, 授权公告日 2018-07-27.
发明人李文辉,周伟,朱建伟. "Method for the Synthesis of Methyl 2,4-dimethyl-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carboxylate" [P]. 中国发明专利, 专利号 CN 112682809 B, 授权公告日 2025-08-21.
参考文献 Literature
Zhou X P, Huang L, Wu G. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Sep. Sci., 2016, 1179, 1276-1297.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2022, 1448, 1796-1813.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of Methyl 2,4-dimethyl-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carboxylate Using HRMS and NMR". Biomed. Chromatogr., 2015, 301, 7657-7682.