发明人黄志刚,朱建伟,沈红梅. "Method for the Synthesis of Methyl 5-cyano-1H-indazole-6-carboxylate" [P]. 中国发明专利, 专利号 CN 109991739 A, 授权公告日 2020-04-09.
Williams B T, Stevens L M, Roberts E F. "A Process for Preparing High-Purity Methyl 5-cyano-1H-indazole-6-carboxylate" [P]. US Patent, US 10659982 B2, 2018-02-18.
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". Molecules, 2019, 166, (6), 6424-6432.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Chromatogr. A, 2019, 101, (5), 7497-7516.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of Methyl 5-cyano-1H-indazole-6-carboxylate Using HRMS and NMR". J. Agric. Food Chem., 2013, 299, (3), 7873-7901.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Pharm. Biomed. Anal., 2019, 1967, 8553-8563.