发明人孙丽萍,刘建华,马晓峰. "Method for the Synthesis of 6-Amino-3-methyl-4-(4-nitrophenyl)-1-phenyl-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile" [P]. 中国发明专利, 专利号 CN 109382269 B, 授权公告日 2020-08-15.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chim. Acta, 2025, 2269, (12), 2713-2731.
Brown R C, Davis S M. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Biomed. Chromatogr., 2024, 904, 8682-8707.
Zhou X P, Huang L, Wu G. "Identification and Structural Characterization of a Novel Degradation Product of 6-Amino-3-methyl-4-(4-nitrophenyl)-1-phenyl-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile Using HRMS and NMR". J. Sep. Sci., 2025, 542, 2830-2856.
Hughes D, Roberts J, Thomas A. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Methods, 2024, 543, (1), 9022-9051.