Simultaneous Determination of Sildenafil, Tadalafil, and Vardenafil in Pharmaceutical Preparations by High-Temperature Gas Chromatography/Mass Spectrometry

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• 作者：Yu-dong Jeong ; SungIll Suh ; Jin Young Kim ; Moon Kyo In ; Ki-Jung Paeng
• 关键词：High ; temperature GC ; Pharmaceutical preparations ; Sildenafil ; Tadalafil ; Vardenafil
• 刊名：Chromatographia
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：79
• 期：23-24
• 页码：1671-1678
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chromatography; Proteomics; Pharmacy; Laboratory Medicine;
• 出版者：Springer Berlin Heidelberg
• ISSN：1612-1112
• 卷排序：79

文摘

Sildenafil (SD), tadalafil (TD), and vardenafil (VD) are drugs used to treat erectile dysfunction (ED). Pharmaceutical counterfeiting-related SD, TD, and VD compounds are becoming a critical problem due to their harmful side-effects. Especially, SD and TD are two major counterfeit ED drugs in South Korea. In this study, a new high-temperature gas chromatography/mass spectrometry (HTGC/MS) method was developed for the rapid determination of SD, TD, and VD in pharmaceutical preparations. A HT GC column was introduced for the rapid analysis of high molecular weight and high boiling point compounds. High-speed centrifugation led to shortened time for results. Calibration curves were linear (R2 ≥ 0.9972) over the concentration ranges of 12.5–100 µg mg−1 for TD and VD, and 25–175 µg mg−1 for SD. The intra- and inter-day precisions were within 7.5 %, while the intra- and inter-day accuracies ranged from –3.0 to 8.0 %. The limits of quantification were 0.7 µg mg−1 (SD and TD) and 0.13 µg mg−1 (VD). The recoveries were in the range of 87.3–102.4 %. The developed method was rapid and accurate both for routine quantitative measurement of SD, TD, and VD in pharmaceutical preparations as well as screening their suspected counterfeit compounds.