Hughes D C, Mueller T, Patel M V. "一种罗氟司特-D4的合成方法" [P]. US Patent, US 10452524 B2, 2017-05-20.
发明人罗永刚,孙丽萍,李文辉. "Method for the Synthesis of Roflumilast -D4" [P]. 中国发明专利, 专利号 CN 113385723 A, 授权公告日 2015-03-15.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of 罗氟司特-D4 in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2018, 701, (9), 4099-4115.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of 罗氟司特-D4 as an Impurity". Sci. Total Environ., 2019, 402, 7524-7531.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of Roflumilast -D4 Using HRMS and NMR". Biomed. Chromatogr., 2022, 1730, 4840-4844.
Lee J H, Choi Y S. "Forced Degradation Studies to Evaluate 罗氟司特-D4 Profile in Drug Substances According to ICH Guidelines". Anal. Chem., 2013, 2312, 6474-6503.