发明人孙丽萍,刘建华,李文辉. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 112283624 A, 授权公告日 2021-09-22.
发明人赵玉洁,罗永刚,郑宇鹏. "Method for the Synthesis of Methyl 4-methyl-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carboxylate" [P]. 中国发明专利, 专利号 CN 111380628 A, 授权公告日 2015-06-06.
发明人胡光,韩伟,周伟. "A Process for Preparing High-Purity Methyl 4-methyl-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carboxylate" [P]. 中国发明专利, 专利号 CN 114852805 B, 授权公告日 2021-03-25.
参考文献 Literature
Hughes D, Roberts J, Thomas A. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chem., 2011, 901, 7838-7849.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chromatographia, 2019, 1625, (3), 8141-8167.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of Methyl 4-methyl-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carboxylate Using HRMS and NMR". Chemosphere, 2025, 1717, (4), 8659-8683.
O'Brien K, Kennedy M L. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Pharm. Biomed. Anal., 2022, 1332, 1391-1394.