Williams B T, Patel M V, Fischer A B. "一种5-chloro-1-methyl-4-nitro-1H-pyrazole-3-carboxylic acid的合成方法" [P]. US Patent, US 11202429 B2, 2016-01-20.
发明人杨光,马晓峰,孙丽萍. "Method for the Synthesis of 5-chloro-1-methyl-4-nitro-1H-pyrazole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 112918471 B, 授权公告日 2021-11-22.
参考文献 Literature
Hughes D, Roberts J, Thomas A. "Development and Validation of an LC-MS/MS Method for the Determination of 5-chloro-1-methyl-4-nitro-1H-pyrazole-3-carboxylic acid in Pharmaceutical Formulations". Biomed. Chromatogr., 2012, 1106, (1), 5999-6009.
Garcia M, Rodriguez P. "A Stability-Indicating HPLC Method for the Separation and Quantification of 5-chloro-1-methyl-4-nitro-1H-pyrazole-3-carboxylic acid as an Impurity". Anal. Chem., 2014, 1421, (4), 632-660.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of 5-chloro-1-methyl-4-nitro-1H-pyrazole-3-carboxylic acid Using HRMS and NMR". Food Chem., 2012, 1732, 7814-7819.