This is an Application Brief and does not contain a detailed Experimental section.
This application brief demonstrates analysis of protriptyline in rat plasma by mixed-mode weak cation exchange and LC-MS/MS.
The compound analyzed in this study is protriptyline.
 
            
        | Column: | XTerra MS C18 2.1 x 20 mm IS, 3.5 μm | 
| Part number: | 186001923 | 
| Mobile phase A: | 10 mM NH4HCO3, pH 10 | 
| Mobile phase B: | MeOH with 10 mM NH4HCO3, pH 10 | 
| Flow rate: | 0.4 mL/min | 
| Injection volume: | 10 μL | 
| Column temperature: | Ambient | 
| Instrument: | Waters 2777 Sample Manager and Waters 1525μ Binary HPLC Pump | 
 
            
        | Waters Micromass Quattro Ultima | |
| ESI+ | |
| Source temp.: | 150 °C | 
| Desolvation temp.: | 350 °C | 
| Cone gas flow: | 50 L/Hr | 
| Desolvation gas flow: | 550 L/Hr | 
| Collision cell: | 2.2e-3 bar (Argon gas) | 
| Cone voltage: | 60 volts | 
| CID: | 25eV | 
| MRM transition: | m/z 264.0 → 191.1 | 
 
            
         
            
        WA31764.196, June 2003