Kumar R, Hughes D C, Brown S R. "一种的合成方法" [P]. US Patent, US 9259676 B2, 2015-10-03.
发明人赵玉洁,张德明,陈志强. "Method for the Synthesis of 2-Ethyl-N-(2-(4-nitrophenyl)-2,6-dihydro-4H-thieno[3,4-c]pyrazol-3-yl)butanamide" [P]. 中国发明专利, 专利号 CN 114242538 A, 授权公告日 2024-08-17.
发明人何建平,高志强,张德明. "A Process for Preparing High-Purity 2-Ethyl-N-(2-(4-nitrophenyl)-2,6-dihydro-4H-thieno[3,4-c]pyrazol-3-yl)butanamide" [P]. 中国发明专利, 专利号 CN 111037236 A, 授权公告日 2020-08-25.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Molecules, 2019, 853, (7), 7924-7934.
Jensen P, Larsen A M, Olsen K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Nat. Prod., 2012, 1645, (7), 5808-5827.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of 2-Ethyl-N-(2-(4-nitrophenyl)-2,6-dihydro-4H-thieno[3,4-c]pyrazol-3-yl)butanamide Using HRMS and NMR". J. Sep. Sci., 2023, 267, (3), 5098-5104.
Brown R C, Davis S M. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Chromatographia, 2015, 911, 3709-3736.