发明人郭海燕,徐明华,韩伟. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 108019663 A, 授权公告日 2022-09-04.
发明人罗永刚,周伟,朱建伟. "Method for the Synthesis of 3-(2-Methyl-3-oxo-3,4-dihydro-2h-1,4-benzoxazin-4-yl)propanoic acid" [P]. 中国发明专利, 专利号 CN 112780927 A, 授权公告日 2024-04-11.
参考文献 Literature
Yang F, Sun W, Liu J. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2013, 2226, 3640-3658.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2016, 1004, 8113-8132.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of 3-(2-Methyl-3-oxo-3,4-dihydro-2h-1,4-benzoxazin-4-yl)propanoic acid Using HRMS and NMR". J. Nat. Prod., 2016, 267, (3), 1744-1772.