发明人韩伟,林芳,赵玉洁. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 112324558 A, 授权公告日 2023-04-17.
Johansson L, Lefèvre J P, Björnsson E. "Method for the Synthesis of 5-Amino-2-methyl-2H-benzo[b][1,4]oxazin-3(4H)-one" [P]. European Patent, EP 3074172 A1, 2021-02-18.
发明人韩伟,沈红梅,唐晓军. "A Process for Preparing High-Purity 5-Amino-2-methyl-2H-benzo[b][1,4]oxazin-3(4H)-one" [P]. 中国发明专利, 专利号 CN 116389825 B, 授权公告日 2019-05-17.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Sep. Sci., 2011, 901, (5), 9871-9893.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2014, 750, (4), 9653-9662.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of 5-Amino-2-methyl-2H-benzo[b][1,4]oxazin-3(4H)-one Using HRMS and NMR". Anal. Chem., 2010, 891, 1947-1969.