Martínez F, Schröder R, Lefèvre J P. "Method for the Synthesis of 2-ethyl-6-methyl-3,4-dihydro-2H-1,4-benzoxazine" [P]. European Patent, EP 3559014 A1, 2020-05-21.
发明人沈红梅,李文辉,赵玉洁. "A Process for Preparing High-Purity 2-ethyl-6-methyl-3,4-dihydro-2H-1,4-benzoxazine" [P]. 中国发明专利, 专利号 CN 116368000 B, 授权公告日 2020-05-19.
参考文献 Literature
Zhang Y, Li Q, Chen T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Sci. Total Environ., 2012, 610, (8), 4345-4368.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Pharm. Biomed. Anal., 2025, 88, (3), 4907-4927.
Zhou X P, Huang L, Wu G. "Identification and Structural Characterization of a Novel Degradation Product of 2-ethyl-6-methyl-3,4-dihydro-2H-1,4-benzoxazine Using HRMS and NMR". J. Agric. Food Chem., 2020, 1004, 6669-6681.