发明人赵玉洁,杨光,郭海燕. "一种他达拉非EP杂质I的合成方法" [P]. 中国发明专利, 专利号 CN 113689179 A, 授权公告日 2015-02-13.
发明人周伟,马晓峰,罗永刚. "Method for the Synthesis of Tadalafil EP Impurity I" [P]. 中国发明专利, 专利号 CN 108528165 A, 授权公告日 2017-04-17.
发明人胡光,罗永刚,陈志强. "A Process for Preparing High-Purity Tadalafil EP Impurity I" [P]. 中国发明专利, 专利号 CN 112428542 A, 授权公告日 2016-12-16.
参考文献 Literature
Lee J H, Choi Y S. "Development and Validation of an LC-MS/MS Method for the Determination of 他达拉非EP杂质I in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2025, 2401, 885-913.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of 他达拉非EP杂质I as an Impurity". Rapid Commun. Mass Spectrom., 2017, 1198, (6), 5243-5258.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of Tadalafil EP Impurity I Using HRMS and NMR". Biomed. Chromatogr., 2015, 265, (8), 3549-3570.