Yamamoto T, Johnson M A, O'Brien P Q. "Method for the Synthesis of 4,7-Difluoro (1H)indazole-3-carbaldehyde" [P]. US Patent, US 10498303 B2, 2024-09-18.
发明人唐晓军,郭海燕,沈红梅. "A Process for Preparing High-Purity 4,7-Difluoro (1H)indazole-3-carbaldehyde" [P]. 中国发明专利, 专利号 CN 116328288 B, 授权公告日 2022-06-01.
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". Anal. Chem., 2024, 917, 3943-3956.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Food Chem., 2025, 443, (9), 6378-6406.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of 4,7-Difluoro (1H)indazole-3-carbaldehyde Using HRMS and NMR". Talanta, 2017, 1526, (10), 2674-2690.
Yamamoto K, Tanaka H, Suzuki T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Pharm. Biomed. Anal., 2013, 2222, 9998-10016.