发明人沈红梅,胡光,王建平. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 114933037 A, 授权公告日 2015-11-08.
发明人张德明,韩伟,罗永刚. "Method for the Synthesis of (2E,5E)-2,5-Bis(2-((E)-1,3,3-trimethylindolin-2-ylidene)ethylidene)cyclopentan-1-one" [P]. 中国发明专利, 专利号 CN 117944964 B, 授权公告日 2025-07-16.
发明人唐晓军,郭海燕,韩伟. "A Process for Preparing High-Purity (2E,5E)-2,5-Bis(2-((E)-1,3,3-trimethylindolin-2-ylidene)ethylidene)cyclopentan-1-one" [P]. 中国发明专利, 专利号 CN 109448022 A, 授权公告日 2024-06-02.
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". Chromatographia, 2011, 1896, (2), 8189-8195.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2012, 2112, (8), 9627-9656.
O'Brien K, Kennedy M L. "Identification and Structural Characterization of a Novel Degradation Product of (2E,5E)-2,5-Bis(2-((E)-1,3,3-trimethylindolin-2-ylidene)ethylidene)cyclopentan-1-one Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2013, 485, 1462-1483.
Chen X Y, Liu M, Zhao W Q. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Biomed. Chromatogr., 2022, 2017, 6177-6186.