Johnson M A, Fischer A B, Brown S R. "一种1-(propan-2-yl)-4,5-dihydro-1H-pyrazol-5-one hydrochloride的合成方法" [P]. US Patent, US 11527009 B2, 2017-05-20.
Johnson M A, Roberts E F, Schröder R. "Method for the Synthesis of 1-(propan-2-yl)-4,5-dihydro-1H-pyrazol-5-one hydrochloride" [P]. US Patent, US 9901509 B2, 2015-12-17.
Johansson L, Nowak P, Martínez F. "A Process for Preparing High-Purity 1-(propan-2-yl)-4,5-dihydro-1H-pyrazol-5-one hydrochloride" [P]. European Patent, EP 3496475 A1, 2019-10-22.
参考文献 Literature
Mueller T, Schmidt R K. "Development and Validation of an LC-MS/MS Method for the Determination of 1-(propan-2-yl)-4,5-dihydro-1H-pyrazol-5-one hydrochloride in Pharmaceutical Formulations". Food Chem., 2017, 1755, (5), 2703-2718.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of 1-(propan-2-yl)-4,5-dihydro-1H-pyrazol-5-one hydrochloride as an Impurity". Sci. Total Environ., 2021, 136, (2), 9518-9535.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of 1-(propan-2-yl)-4,5-dihydro-1H-pyrazol-5-one hydrochloride Using HRMS and NMR". J. Chromatogr. A, 2017, 693, (12), 3168-3180.