Kumar R, Schröder R, Klinger H. "一种的合成方法" [P]. US Patent, US 10810557 B2, 2018-03-02.
Klinger H, Anderson J P, Chen K W. "Method for the Synthesis of 4-Chloro-1-methyl-5-(trifluoromethyl)-1H-pyrazol-3(2H)-one" [P]. US Patent, US 11227736 B2, 2023-06-08.
Kowalski A, Johansson L, Schröder R. "A Process for Preparing High-Purity 4-Chloro-1-methyl-5-(trifluoromethyl)-1H-pyrazol-3(2H)-one" [P]. European Patent, EP 3155979 A1, 2024-10-08.
参考文献 Literature
Lee J H, Choi Y S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Sci. Total Environ., 2011, 242, 6482-6486.
Yamamoto K, Tanaka H, Suzuki T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2014, 1943, (3), 8097-8122.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of 4-Chloro-1-methyl-5-(trifluoromethyl)-1H-pyrazol-3(2H)-one Using HRMS and NMR". J. Chromatogr. A, 2011, 1470, (6), 2828-2857.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Chromatographia, 2014, 1428, (2), 5168-5195.