发明人冯建国,胡光,徐明华. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 110837817 A, 授权公告日 2023-11-22.
发明人郭海燕,钱学锋,周伟. "Method for the Synthesis of Ethyl 1-methyl-1H-indazole-7-carboxylate" [P]. 中国发明专利, 专利号 CN 108612275 A, 授权公告日 2023-10-08.
发明人沈红梅,王建平,罗永刚. "A Process for Preparing High-Purity Ethyl 1-methyl-1H-indazole-7-carboxylate" [P]. 中国发明专利, 专利号 CN 110520826 A, 授权公告日 2019-10-24.
参考文献 Literature
Jensen P, Larsen A M, Olsen K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Environ. Sci. Technol., 2011, 1541, (12), 7515-7540.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chim. Acta, 2017, 2359, (7), 7031-7038.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 1-methyl-1H-indazole-7-carboxylate Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2019, 716, 9777-9793.
Jensen P, Larsen A M, Olsen K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Molecules, 2018, 1378, (4), 6916-6927.