发明人胡光,王建平,钱学锋. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 108353133 A, 授权公告日 2019-12-06.
Chen K W, Fischer A B, Hughes D C. "Method for the Synthesis of tert-Butyl 3-formyl-4-nitro-1H-indazole-1-carboxylate" [P]. US Patent, US 9295244 B2, 2022-07-27.
发明人何建平,马晓峰,韩伟. "A Process for Preparing High-Purity tert-Butyl 3-formyl-4-nitro-1H-indazole-1-carboxylate" [P]. 中国发明专利, 专利号 CN 117709686 B, 授权公告日 2020-04-05.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chemosphere, 2011, 2457, (7), 9786-9811.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Agric. Food Chem., 2022, 1019, 6398-6407.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of tert-Butyl 3-formyl-4-nitro-1H-indazole-1-carboxylate Using HRMS and NMR". Sci. Total Environ., 2011, 1587, (6), 2312-2337.
Zhou X P, Huang L, Wu G. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Sep. Sci., 2025, 1133, 518-523.