Brown S R, Thompson G K, Mueller T. "一种的合成方法" [P]. US Patent, US 10834539 B2, 2017-12-16.
Nielsen H, Jørgensen K, Johansson L. "Method for the Synthesis of 5-(2-Methylpropyl)-1h-pyrazole-4-carboxylic acid" [P]. European Patent, EP 3625408 A1, 2019-12-22.
发明人高志强,杨光,朱建伟. "A Process for Preparing High-Purity 5-(2-Methylpropyl)-1h-pyrazole-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111241089 B, 授权公告日 2020-06-12.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Agric. Food Chem., 2022, 666, (2), 2357-2387.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Phytochemistry, 2015, 817, 5387-5390.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of 5-(2-Methylpropyl)-1h-pyrazole-4-carboxylic acid Using HRMS and NMR". J. Pharm. Biomed. Anal., 2021, 628, (7), 8502-8530.