Table 1.
Summary of analyte-specific mass spectrometry parameters.
Compound | Parent Ion (m/z) | Product Ion (m/z) | Declustering Potential (V) | Entrance Potential (V) | Collision Energy (V) | Collision Cell Exit Potential (V) |
---|---|---|---|---|---|---|
Gem | 264.0 | 112.0 | 60 | 12 | 26 | 13 |
dFdU | 265.0 | 113.0 | 60 | 12 | 22 | 13 |
V-Gem | 363.1 | 264.0 | 6 | 8 | 22 | 14 |
13C,15N2-Gem (IS) | 267.0 | 115.0 | 60 | 12 | 26 | 13 |
13C,15N2-dFdU (IS) | 268.0 | 116.0 | 60 | 12 | 22 | 13 |
Gem, gemcitabine; dFdU, 2’,2’-difluorodeoxyuridine; V-Gem, 5’-l-valyl-gemcitabine; IS, internal standard.