 
            
        This is an Application Brief and does not contain a detailed Experimental section.
This application brief highlights the analysis of dextromethorphan using XTerra RP18 columns.
Dextromethorphan has been analyzed in this study.
 
            
        | Column: | XTerra RP18 4.6 x 150 mm, 5 μm (p/n: 186000492) | 
| Mobile phase: | At pH 3.0: H2O/ACN/100 Mm NH4COOH, pH 3.0, 40:50:10 At pH 7.0: H2O/ACN/100 mM NH4HCO3, pH 7.0, 50:40:10 At pH 10.0: H2O/ACN/100 mM NH4HCO3, pH 10.0, 22:68:10 | 
| Flow rate: | 1.0 mL/min | 
| Injection volume: | 5 μL of 250 μg/mL | 
| Temperature: | 30 °C | 
| Detection: | UV @ 228 nm | 
| Instrument: | Alliance 2695, 2996 PDA | 
| Mobile Phase pH | USP Tailing | 
| 3.0 | 1.25 | 
| 7.0 | 1.39 | 
| 10.0 | 1.39 | 
 
            
        WA20738.033, June 2002