Research Article
A Simple and Rapid LC-MS/MS Method for the Quantification of Nirmatrelvir/Ritonavir in Plasma of Patients with COVID-19
Table 1
Mass spectrometry parameters of analytes and IS.
| Analytes | MRM transition m/z (Q1⟶Q3) | Fragmentor (V) | CE (eV) |
| Nirmatrelvir | 500.2⟶110.1 | 125 | 18 | Ritonavir | 721.3⟶296.1 | 140 | 17 | Selinexor (IS) | 444.1⟶282.0 | 120 | 19 |
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