发明人马晓峰,周伟,韩伟. "Method for the Synthesis of 2-Ethyl-3,4-dihydro-2H-1,4-benzoxazine" [P]. 中国发明专利, 专利号 CN 109107747 A, 授权公告日 2025-10-10.
发明人黄志刚,冯建国,赵玉洁. "A Process for Preparing High-Purity 2-Ethyl-3,4-dihydro-2H-1,4-benzoxazine" [P]. 中国发明专利, 专利号 CN 111280082 B, 授权公告日 2018-06-25.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chem., 2015, 979, (10), 835-864.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2019, 682, (1), 7473-7503.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of 2-Ethyl-3,4-dihydro-2H-1,4-benzoxazine Using HRMS and NMR". Anal. Methods, 2019, 1568, (5), 2588-2594.
Garcia M, Rodriguez P. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chim. Acta, 2013, 2259, (3), 3060-3080.