Table 1.
Mass spectrometric analysis parameters of four analytes and IS.
| Analyte | TR | Molecular Formula | Ion Mode | Theoretical Mass (m/z) |
Measured Mass (m/z) |
Mass Error (ppm) |
|---|---|---|---|---|---|---|
| Butylidenephthalide | 8.05 | C12H12O2 | [M + H]+ | 189.09100 | 189.09105 | 0.26 |
| Ligustilide | 8.38 | C12H14O2 | [M + H]+ | 191.10665 | 191.10664 | 0.05 |
| Senkyunolide A | 7.86 | C12H16O2 | [M + H]+ | 193.12230 | 193.12244 | 0.72 |
| Ferulic acid | 3.99 | C10H10O4 | [M − H]− | 193.05063 | 193.04997 | 3.41 |
| Calycosin-7-O-β-d-glucoside (IS) | 4.05 | C22H22O10 | [M + H]+ | 447.12857 | 447.12817 | 0.89 |