Table 2 Mass spectrometry of six representational compounds
ID | Compounds | Formula | Molecular Weight (g·mol−1) | Retention Time t/min | Parent ion (m/z) | Product ion (m/z) | Ionization mode |
|---|---|---|---|---|---|---|---|
1 | morroniside | C17H26O11 | 406.380 | 3.106 | 451.000 | 179.000 | [M-HCOO]− |
2 | loganin | C17H26O10 | 390.430 | 3.407 | 408.200 | 229.000 | [M + NH4]+ |
3 | baicalin | C21H18O11 | 446.360 | 4.592 | 445.100 | 269.000 | [M + H]− |
4 | wogonoside | C22H20O11 | 460.390 | 5.100 | 461.100 | 283.000 | [M + H]+ |
5 | wogonin | C16H12O5 | 284.300 | 6.300 | 285.100 | 270.000 | [M + H]+ |
6 | sweroside | C16H22O9 | 358.340 | 3.490 | 357.100 | 125.000 | [M-H]− |