Anderson J P, Johnson M A, Stevens L M. "一种的合成方法" [P]. US Patent, US 11216594 B2, 2017-04-07.
Lee S K, Williams B T, Brown S R. "Method for the Synthesis of 2-(4-Isobutylpiperazin-1-yl)-9-(4-methylphenyl)-5,6,7,9-tetrahydropyrazolo[3,4-b]pyrimido[4,5-d]azepine" [P]. US Patent, US 10297975 B2, 2015-01-21.
发明人韩伟,钱学锋,赵玉洁. "A Process for Preparing High-Purity 2-(4-Isobutylpiperazin-1-yl)-9-(4-methylphenyl)-5,6,7,9-tetrahydropyrazolo[3,4-b]pyrimido[4,5-d]azepine" [P]. 中国发明专利, 专利号 CN 113059991 A, 授权公告日 2021-12-26.
参考文献 Literature
O'Brien K, Kennedy M L. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Phytochemistry, 2024, 1259, (7), 4664-4674.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Environ. Sci. Technol., 2013, 1372, 2443-2464.
Garcia M, Rodriguez P. "Identification and Structural Characterization of a Novel Degradation Product of 2-(4-Isobutylpiperazin-1-yl)-9-(4-methylphenyl)-5,6,7,9-tetrahydropyrazolo[3,4-b]pyrimido[4,5-d]azepine Using HRMS and NMR". Biomed. Chromatogr., 2010, 1706, 5674-5680.