发明人马晓峰,王建平,林芳. "Method for the Synthesis of 4,5-Dimethyl-2-oxazolecarboxylic Acid" [P]. 中国发明专利, 专利号 CN 109805435 B, 授权公告日 2021-01-09.
发明人马晓峰,黄志刚,郭海燕. "A Process for Preparing High-Purity 4,5-Dimethyl-2-oxazolecarboxylic Acid" [P]. 中国发明专利, 专利号 CN 110423786 B, 授权公告日 2020-03-26.
参考文献 Literature
Yang F, Sun W, Liu J. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Agric. Food Chem., 2010, 967, (9), 7297-7325.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Biomed. Chromatogr., 2021, 941, 2269-2296.
Kumar A, Sharma P, Patel R S. "Identification and Structural Characterization of a Novel Degradation Product of 4,5-Dimethyl-2-oxazolecarboxylic Acid Using HRMS and NMR". Talanta, 2014, 2222, (4), 1569-1583.
Lee J H, Choi Y S. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Chromatographia, 2015, 2217, (5), 5236-5261.