Chen K W, Thompson G K, Johnson M A. "一种的合成方法" [P]. US Patent, US 10056156 B2, 2016-04-16.
Nielsen H, Rossi M, Lefèvre J P. "Method for the Synthesis of 4-Amino-1-ethyl-N-((tetrahydrofuran-2-yl)methyl)-1h-pyrazole-3-carboxamide" [P]. European Patent, EP 3444174 A1, 2020-08-01.
Johansson L, Kowalski A, Rossi M. "A Process for Preparing High-Purity 4-Amino-1-ethyl-N-((tetrahydrofuran-2-yl)methyl)-1h-pyrazole-3-carboxamide" [P]. European Patent, EP 3879301 A1, 2023-03-27.
参考文献 Literature
Garcia M, Rodriguez P. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2010, 908, (8), 3749-3753.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Phytochemistry, 2018, 554, (5), 5101-5118.
Xu M, Hu Y, Zhou D. "Identification and Structural Characterization of a Novel Degradation Product of 4-Amino-1-ethyl-N-((tetrahydrofuran-2-yl)methyl)-1h-pyrazole-3-carboxamide Using HRMS and NMR". Anal. Chem., 2012, 2438, 3344-3362.
Yamamoto K, Tanaka H, Suzuki T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Sci. Total Environ., 2025, 729, (11), 5821-5825.