发明人赵玉洁,孙丽萍,林芳. "Method for the Synthesis of 1-Phenyl-1H-pyrazolo[3,4-b]pyrazine-5-carbonitrile" [P]. 中国发明专利, 专利号 CN 117567946 B, 授权公告日 2022-07-06.
Brown S R, Fischer A B, Yamamoto T. "A Process for Preparing High-Purity 1-Phenyl-1H-pyrazolo[3,4-b]pyrazine-5-carbonitrile" [P]. US Patent, US 9597810 B2, 2015-02-14.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Agric. Food Chem., 2017, 955, (7), 390-419.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chim. Acta, 2011, 1179, (6), 1534-1562.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of 1-Phenyl-1H-pyrazolo[3,4-b]pyrazine-5-carbonitrile Using HRMS and NMR". J. Chromatogr. A, 2022, 220, (4), 7495-7511.