A High-Performance Liquid Chromatography:Chemiluminescence Method for Potential Determination of Vardenafil in Dietary Supplement

<table>Vardenafil chromatograms with (A) and without (B) H<sub>3</sub>PO<sub>4</sub> in mobile phase. Mobile phase contained 25% ethanol and <svg height="14.375" id="M33" style="vertical-align:-0.3135pt" version="1.1" viewbox="0 0 65.824997 14.375" width="65.824997" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,14.375)">
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<tspan style="font-size: 12.50px; " x="9.3772497" y="0">0</tspan>
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<tspan style="font-size: 12.50px; " x="29.182001" y="0">1</tspan>
<tspan style="font-size: 12.50px; " x="35.433502" y="0">0</tspan>
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<text transform="matrix(1,0,0,-1,-30.26,66.03)">
<tspan style="font-size: 8.75px; " x="0" y="0">−</tspan>
<tspan style="font-size: 8.75px; " x="5.99512" y="0">4</tspan>
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</svg> mol/L Na<sub>2</sub>EDTA.</table>

Journal of Analytical Methods in Chemistry

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Figure 3

Figure 3: A High-Performance Liquid Chromatography:Chemiluminescence Method for Potential Determination of Vardenafil in Dietary Supplement 