发明人马晓峰,陈志强,林芳. "Method for the Synthesis of 4,5,6,7-Tetrahydro-1H-indazole-4-carboxylic acid ethyl ester hydrochloride" [P]. 中国发明专利, 专利号 CN 110796561 A, 授权公告日 2023-05-03.
发明人沈红梅,徐明华,马晓峰. "A Process for Preparing High-Purity 4,5,6,7-Tetrahydro-1H-indazole-4-carboxylic acid ethyl ester hydrochloride" [P]. 中国发明专利, 专利号 CN 112338598 B, 授权公告日 2024-12-04.
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". J. Chromatogr. A, 2025, 1475, (12), 4454-4463.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Food Chem., 2017, 2362, 4229-4249.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of 4,5,6,7-Tetrahydro-1H-indazole-4-carboxylic acid ethyl ester hydrochloride Using HRMS and NMR". Phytochemistry, 2016, 1327, 2845-2854.