Kumar R, Brown S R, Davis P L. "Method for the Synthesis of 3-Butyl-5-methylisoxazole-4-carboxylic acid" [P]. US Patent, US 11332937 B2, 2016-04-23.
发明人郭海燕,马晓峰,李文辉. "A Process for Preparing High-Purity 3-Butyl-5-methylisoxazole-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113873427 A, 授权公告日 2022-04-27.
参考文献 Literature
Brown R C, Davis S M. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chromatographia, 2011, 267, (8), 1659-1683.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Biomed. Chromatogr., 2021, 281, (10), 4103-4126.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of 3-Butyl-5-methylisoxazole-4-carboxylic acid Using HRMS and NMR". Anal. Chim. Acta, 2022, 1404, (10), 6472-6501.