Johnson M A, Schröder R, Anderson J P. "一种的合成方法" [P]. US Patent, US 9717482 B2, 2020-10-07.
Brown S R, Schröder R, Williams B T. "Method for the Synthesis of 2-(2-Methyl-3-oxo-3,4-dihydro-2h-1,4-benzoxazin-4-yl)acetic acid" [P]. US Patent, US 11456265 B2, 2017-03-28.
发明人钱学锋,张德明,唐晓军. "A Process for Preparing High-Purity 2-(2-Methyl-3-oxo-3,4-dihydro-2h-1,4-benzoxazin-4-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 114058480 A, 授权公告日 2015-01-21.
参考文献 Literature
O'Brien K, Kennedy M L. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Food Chem., 2017, 281, (2), 6809-6828.
Brown R C, Davis S M. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2010, 952, (7), 7686-7698.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of 2-(2-Methyl-3-oxo-3,4-dihydro-2h-1,4-benzoxazin-4-yl)acetic acid Using HRMS and NMR". Molecules, 2019, 2384, 7523-7535.
Lee J H, Choi Y S. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Rapid Commun. Mass Spectrom., 2011, 2055, 9762-9789.