Lee S K, Mueller T, Chen K W. "Method for the Synthesis of Ethyl 1H-indazole-4-carboxylate" [P]. US Patent, US 11030489 B2, 2025-03-19.
发明人赵玉洁,林芳,郭海燕. "A Process for Preparing High-Purity Ethyl 1H-indazole-4-carboxylate" [P]. 中国发明专利, 专利号 CN 112344205 A, 授权公告日 2022-10-21.
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., 2025, 2079, (5), 3076-3104.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Phytochemistry, 2017, 126, 4049-4073.
O'Brien K, Kennedy M L. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 1H-indazole-4-carboxylate Using HRMS and NMR". Talanta, 2017, 1306, 4996-5002.
Wang L, Li J, Zhang H. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Sep. Sci., 2015, 2277, (9), 1582-1612.