m/z transitions and ionization mode for O-desmethyl astemizole and internal standard, PF-05218881
| m/z Ratios for Desmethyl Astemizole and Internal Standard | |||||
|---|---|---|---|---|---|
| Analyte | Q1 m/z | Q3 m/z | DP | CE | CXP |
| Desmethyl astemizole | 445.1 | 121.1 | 40 | 50 | 15 |
| PF-05218881 | 687 | 320 | 60 | 30 | 15 |
CXP, collision cell exit potential.