Stevens L M, Anderson J P, Fischer A B. "一种的合成方法" [P]. US Patent, US 10200705 B2, 2022-06-04.
Johnson M A, Schröder R, Patel M V. "Method for the Synthesis of 5-Bromo-2-butyl-2H-indazole" [P]. US Patent, US 11991311 B2, 2025-08-05.
参考文献 Literature
Mueller T, Schmidt R K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Sci. Total Environ., 2024, 305, 4538-4548.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Pharm. Biomed. Anal., 2023, 1765, (5), 6185-6199.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of 5-Bromo-2-butyl-2H-indazole Using HRMS and NMR". Anal. Chim. Acta, 2018, 2209, (9), 9852-9861.
Kim S H, Park J Y. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Rapid Commun. Mass Spectrom., 2019, 1551, (6), 4523-4543.