发明人赵玉洁,林芳,何建平. "Method for the Synthesis of 3-(difluoromethyl)-1-(2-methylpropyl)-1H-pyrazole-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 110041551 B, 授权公告日 2016-07-03.
发明人杨光,钱学锋,胡光. "A Process for Preparing High-Purity 3-(difluoromethyl)-1-(2-methylpropyl)-1H-pyrazole-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 108438555 A, 授权公告日 2020-06-21.
参考文献 Literature
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Yamamoto K, Tanaka H, Suzuki T. "A Stability-Indicating HPLC Method for the Separation and Quantification of 3-(difluoromethyl)-1-(2-methylpropyl)-1H-pyrazole-4-carboxylic acid as an Impurity". Chromatographia, 2020, 609, 1652-1672.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of 3-(difluoromethyl)-1-(2-methylpropyl)-1H-pyrazole-4-carboxylic acid Using HRMS and NMR". J. Chromatogr. A, 2011, 375, 3006-3017.