发明人杨光,刘建华,郑宇鹏. "Method for the Synthesis of (4E)-2-Methyl-6-oxo-4-{[(3,4,5-trimethoxyphenyl)amino]methylidene}-1,4,5,6-tetrahydropyridine-3-carbonitrile" [P]. 中国发明专利, 专利号 CN 108736681 B, 授权公告日 2022-10-11.
Fischer A B, O'Brien P Q, Mueller T. "A Process for Preparing High-Purity (4E)-2-Methyl-6-oxo-4-{[(3,4,5-trimethoxyphenyl)amino]methylidene}-1,4,5,6-tetrahydropyridine-3-carbonitrile" [P]. US Patent, US 9615123 B2, 2025-05-05.
参考文献 Literature
Brown R C, Davis S M. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Phytochemistry, 2018, 2176, (10), 4308-4313.
Garcia M, Rodriguez P. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Food Chem., 2020, 1651, (10), 4876-4900.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of (4E)-2-Methyl-6-oxo-4-{[(3,4,5-trimethoxyphenyl)amino]methylidene}-1,4,5,6-tetrahydropyridine-3-carbonitrile Using HRMS and NMR". Molecules, 2022, 1447, (12), 4123-4149.
Yang F, Sun W, Liu J. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Chemosphere, 2019, 2454, (10), 2485-2488.