发明人张德明,王建平,马晓峰. "Method for the Synthesis of 5-Ethyl-3-(oxan-4-yl)-1,2-oxazole-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117920290 B, 授权公告日 2015-03-13.
Johansson L, Nowak P, Martínez F. "A Process for Preparing High-Purity 5-Ethyl-3-(oxan-4-yl)-1,2-oxazole-4-carboxylic acid" [P]. European Patent, EP 3465287 A1, 2020-10-22.
参考文献 Literature
Yamamoto K, Tanaka H, Suzuki T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chem., 2019, 1341, 6509-6530.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2012, 2477, (6), 1120-1140.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of 5-Ethyl-3-(oxan-4-yl)-1,2-oxazole-4-carboxylic acid Using HRMS and NMR". J. Pharm. Biomed. Anal., 2016, 1339, 1280-1293.