This is an Application Brief and does not contain a detailed Experimental section.
This application brief demonstrates analysis of terfenadine and metabolites by reverse-phase SPE and LC-MS/MS.
The compounds analyzed in this study are terfenadine and metabolites.
| 
                     Column:  | 
                     Xterra MS C18, 2.1 x 30 mm, 3.5 μm  | 
            
| 
                     Part number:  | 
                     186000398  | 
            
| 
                     Mobile phase A:  | 
                     Water + 0.1M NH4 formate pH 9.5  | 
            
| 
                     Mobile phase B:  | 
                     MeOH + 0.1M NH4 formate pH 9.5  | 
            
| 
                     Flow rate:  | 
                     0.4 mL/min  | 
            
| 
                     Temperature:  | 
                     Ambient  | 
            
| 
                     LC instrument:  | 
                     Alliance 2795  | 
            
            
        | 
                     MS instrument:  | 
                     Waters Micromass Quattro  | 
            
| 
                     Ion source:  | 
                     ESI+  | 
            
| 
                     Source temperature:  | 
                     150 °C  | 
            
| 
                     Gas cell:  | 
                     2.0e-3 bar Argon  | 
            
| 
                     Cone voltage:  | 
                     35 volts  | 
            
| 
                     Capillary voltage:  | 
                     3.5 kV  | 
            
| 
                     Drying gas flow:  | 
                     500 L/hr  | 
            
| 
                     Cone gas flow:  | 
                     50 L/hr  | 
            
| 
                     Desolvation temperature:  | 
                     350 °C  | 
            
| 
                     MRM transition:  | 
                     Protriptyline (IS) m/z 263.9 → 190.8 Terfenadine m/z 472.2 → 436.2 Terfenadine-alcohol m/z 488.2 → 452.2 Terfenadine-carboxylate m/z 502.2 → 466.2  | 
            
            
        
            
        
            
        
            
        
            
        
            
        
            
        WA31764.144 , June 2003