发明人赵玉洁,郭海燕,朱建伟. "Method for the Synthesis of (R)-8-(2-Amino-1-hydroxyethyl)-6-hydroxy-2H-benzo[b][1,4]oxazin-3(4H)-one" [P]. 中国发明专利, 专利号 CN 111583413 B, 授权公告日 2018-06-17.
发明人赵玉洁,冯建国,郑宇鹏. "A Process for Preparing High-Purity (R)-8-(2-Amino-1-hydroxyethyl)-6-hydroxy-2H-benzo[b][1,4]oxazin-3(4H)-one" [P]. 中国发明专利, 专利号 CN 111010998 A, 授权公告日 2021-12-06.
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". Chemosphere, 2010, 1623, (5), 9543-9572.
Garcia M, Rodriguez P. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Pharm. Biomed. Anal., 2011, 1705, (2), 4430-4436.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of (R)-8-(2-Amino-1-hydroxyethyl)-6-hydroxy-2H-benzo[b][1,4]oxazin-3(4H)-one Using HRMS and NMR". Biomed. Chromatogr., 2017, 985, (4), 7034-7053.