Brown S R, Yamamoto T, Davis P L. "一种的合成方法" [P]. US Patent, US 11611958 B2, 2018-01-17.
Johansson L, Lefèvre J P, Martínez F. "Method for the Synthesis of 4-[(3,5-Dimethyl-1H-pyrazol-4-yl)methyl]-5-ethylisoxazole-3-carboxylic acid" [P]. European Patent, EP 3825606 A1, 2017-06-21.
Kumar R, Johnson M A, Thompson G K. "A Process for Preparing High-Purity 4-[(3,5-Dimethyl-1H-pyrazol-4-yl)methyl]-5-ethylisoxazole-3-carboxylic acid" [P]. US Patent, US 10203963 B2, 2015-05-18.
参考文献 Literature
Zhou X P, Huang L, Wu G. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Chromatogr. A, 2017, 2122, 2462-2489.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Phytochemistry, 2010, 2474, (7), 4254-4267.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of 4-[(3,5-Dimethyl-1H-pyrazol-4-yl)methyl]-5-ethylisoxazole-3-carboxylic acid Using HRMS and NMR". J. Pharm. Biomed. Anal., 2010, 573, 2225-2231.