Stevens L M, Yamamoto T, Roberts E F. "Method for the Synthesis of 3-Ethoxy-2-ethyl-N-(2-(thiophen-2-yl)ethyl)-2H-indazole-6-carboxamide" [P]. US Patent, US 11163195 B2, 2022-04-22.
发明人唐晓军,杨光,孙丽萍. "A Process for Preparing High-Purity 3-Ethoxy-2-ethyl-N-(2-(thiophen-2-yl)ethyl)-2H-indazole-6-carboxamide" [P]. 中国发明专利, 专利号 CN 109477695 B, 授权公告日 2018-01-10.
参考文献 Literature
Hughes D, Roberts J, Thomas A. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Phytochemistry, 2013, 1401, 8738-8764.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Environ. Sci. Technol., 2025, 2352, (4), 9051-9061.
Zhou X P, Huang L, Wu G. "Identification and Structural Characterization of a Novel Degradation Product of 3-Ethoxy-2-ethyl-N-(2-(thiophen-2-yl)ethyl)-2H-indazole-6-carboxamide Using HRMS and NMR". Sci. Total Environ., 2018, 1645, (12), 6901-6910.
Yamamoto K, Tanaka H, Suzuki T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Molecules, 2019, 146, (11), 4305-4323.