Table 2. Chemical constituents of RSE identified through liquid chromatography-high resolution mass spectrometry.
| Peak | Rt(min) | MS-Mol. wt.+H | Actual Mol. wt.+H | Formula | Constituents |
|---|---|---|---|---|---|
| 1 | 3.30 | 435.1387 | 435.1359 | C20H22N2O9 | Glucodichotomine B |
| 2 | 3.362 | 273.0850 | 273.0875 | C14H12N2O4 | Dichotomine B |
| 3 | 4.070 | 257.0919 | 257.0926 | C14H12N2O3 | β-carboline alkaloid |
| 4 | 7.59 | 384.1195 | 384.1151 | C19H17N3O6 | Dichotomine H |
| 5 | 9.238 | 369.1425 | 369.1450 | C20H20N2O5 | Dichotomine L |
| 6 | 7.614 | 254.0919 | 254.0930 | C14H11N3O2 | Stellarine A |
| 7 | 8.190 | 338.1138 | 338.1141 | C18H15N3O4 | Stellarine B |
| 8 | 8.940 | 269.0920 | 269.0926 | C15H12N2O3 | Stellarine C |
| 9 | 3.793 | 153.0562 | 153.0552 | C8H8O3 | Vanillin |
| 10 | 2.058 | 127.0392 | 127.0395 | C6H6O3 | 5-Hydroxymethylfurfural |
Notes.
- Rt
- retention time (min)
- MS-Mol
- wt.+H: primary mass spectrometry
- Actual Mol
- wt.+H: actual molecular weight