Stevens L M, Lee S K, Fischer A B. "一种的合成方法" [P]. US Patent, US 10182931 B2, 2024-04-21.
Park J H, Thompson G K, Patel M V. "Method for the Synthesis of 4-Methyl-3-nitro-1H-pyrazole-1-acetic acid" [P]. US Patent, US 11284530 B2, 2025-03-14.
发明人徐明华,杨光,周伟. "A Process for Preparing High-Purity 4-Methyl-3-nitro-1H-pyrazole-1-acetic acid" [P]. 中国发明专利, 专利号 CN 117114436 A, 授权公告日 2015-06-26.
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". Anal. Chem., 2018, 1660, (12), 6923-6946.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2019, 2426, 7235-7245.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of 4-Methyl-3-nitro-1H-pyrazole-1-acetic acid Using HRMS and NMR". J. Pharm. Biomed. Anal., 2014, 1771, 3515-3533.