发明人陈志强,冯建国,何建平. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 109168242 A, 授权公告日 2019-03-20.
发明人孙丽萍,张德明,韩伟. "Method for the Synthesis of 3-Ethoxy-2-ethyl-2H-indazole-6-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111586393 B, 授权公告日 2017-03-21.
参考文献 Literature
Mueller T, Schmidt R K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Talanta, 2011, 1477, (12), 5050-5063.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2011, 2310, 3619-3636.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of 3-Ethoxy-2-ethyl-2H-indazole-6-carboxylic acid Using HRMS and NMR". J. Chromatogr. A, 2025, 412, (10), 9597-9626.
Jensen P, Larsen A M, Olsen K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Molecules, 2018, 914, (1), 8373-8395.