Nielsen H, Björnsson E, Jørgensen K. "Method for the Synthesis of 1-Ethyl-1h-indazol-6-amine" [P]. European Patent, EP 3735052 A1, 2015-03-22.
Chen K W, Lee S K, Kumar R. "A Process for Preparing High-Purity 1-Ethyl-1h-indazol-6-amine" [P]. US Patent, US 11461023 B2, 2016-09-10.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2018, 855, (12), 3802-3823.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Pharm. Biomed. Anal., 2025, 1026, (3), 2381-2387.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of 1-Ethyl-1h-indazol-6-amine Using HRMS and NMR". Anal. Methods, 2019, 2048, (11), 8496-8522.