发明人王建平,朱建伟,冯建国. "Method for the Synthesis of 1-Phenyl-1H-pyrazolo[3,4-d]pyridazine-7-carbonitrile" [P]. 中国发明专利, 专利号 CN 115543583 A, 授权公告日 2017-12-01.
发明人徐明华,冯建国,马晓峰. "A Process for Preparing High-Purity 1-Phenyl-1H-pyrazolo[3,4-d]pyridazine-7-carbonitrile" [P]. 中国发明专利, 专利号 CN 111349250 A, 授权公告日 2016-02-24.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chim. Acta, 2013, 385, (1), 707-710.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Chromatogr. A, 2022, 1904, 7168-7182.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of 1-Phenyl-1H-pyrazolo[3,4-d]pyridazine-7-carbonitrile Using HRMS and NMR". Talanta, 2013, 1952, (3), 9898-9928.
Kim S H, Park J Y. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Sep. Sci., 2019, 916, 1411-1421.