发明人何建平,李文辉,杨光. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 108735064 A, 授权公告日 2025-05-21.
发明人刘建华,李文辉,朱建伟. "Method for the Synthesis of 7-Ethyl-1H-indazole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 108486752 B, 授权公告日 2015-05-20.
发明人赵玉洁,张德明,徐明华. "A Process for Preparing High-Purity 7-Ethyl-1H-indazole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111405357 A, 授权公告日 2022-05-07.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2015, 583, 5783-5798.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2016, 2452, (3), 3835-3851.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of 7-Ethyl-1H-indazole-3-carboxylic acid Using HRMS and NMR". J. Agric. Food Chem., 2013, 508, 2258-2261.
Brown R C, Davis S M. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chim. Acta, 2024, 2321, 6111-6139.