发明人林芳,徐明华,周伟. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 109545423 A, 授权公告日 2017-07-07.
发明人徐明华,孙丽萍,王建平. "Method for the Synthesis of 5-Isopropyl-4-nitro-1H-pyrazole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111042698 B, 授权公告日 2021-09-26.
发明人林芳,沈红梅,何建平. "A Process for Preparing High-Purity 5-Isopropyl-4-nitro-1H-pyrazole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 116961139 B, 授权公告日 2021-08-14.
参考文献 Literature
Zhang Y, Li Q, Chen T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Environ. Sci. Technol., 2012, 2364, (4), 8272-8296.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Nat. Prod., 2025, 1612, (7), 2263-2276.
Xu M, Hu Y, Zhou D. "Identification and Structural Characterization of a Novel Degradation Product of 5-Isopropyl-4-nitro-1H-pyrazole-3-carboxylic acid Using HRMS and NMR". Chemosphere, 2010, 814, (8), 399-403.
Fischer P, Wagner E. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Rapid Commun. Mass Spectrom., 2024, 1834, 4361-4367.