发明人黄志刚,王建平,张德明. "Method for the Synthesis of (2E)-4,4-Dimethyl-2-{[4-(4-methylpiperazin-1-yl)phenyl]methylidene}-3-oxopentanenitrile" [P]. 中国发明专利, 专利号 CN 114262802 A, 授权公告日 2015-12-05.
发明人郭海燕,唐晓军,钱学锋. "A Process for Preparing High-Purity (2E)-4,4-Dimethyl-2-{[4-(4-methylpiperazin-1-yl)phenyl]methylidene}-3-oxopentanenitrile" [P]. 中国发明专利, 专利号 CN 111126959 A, 授权公告日 2024-10-05.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Sep. Sci., 2024, 1456, (10), 7074-7083.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Phytochemistry, 2020, 2296, (3), 2354-2383.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of (2E)-4,4-Dimethyl-2-{[4-(4-methylpiperazin-1-yl)phenyl]methylidene}-3-oxopentanenitrile Using HRMS and NMR". Chromatographia, 2020, 313, 4370-4384.
Garcia M, Rodriguez P. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Pharm. Biomed. Anal., 2021, 1069, 906-926.