Johnson M A, Klinger H, Kumar R. "一种的合成方法" [P]. US Patent, US 9380033 B2, 2016-10-10.
发明人张德明,钱学锋,马晓峰. "Method for the Synthesis of 2-(4-Bromophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazin-4(5H)-one" [P]. 中国发明专利, 专利号 CN 114220610 A, 授权公告日 2015-09-28.
Lefèvre J P, Johansson L, Kowalski A. "A Process for Preparing High-Purity 2-(4-Bromophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazin-4(5H)-one" [P]. European Patent, EP 3353463 A1, 2021-03-26.
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". Anal. Chem., 2025, 1921, (1), 8408-8427.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Molecules, 2020, 703, (8), 9536-9566.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of 2-(4-Bromophenyl)-6,7-dihydropyrazolo[1,5-a]pyrazin-4(5H)-one Using HRMS and NMR". Anal. Methods, 2019, 483, (3), 6400-6417.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chim. Acta, 2013, 1737, (2), 831-837.