Table 1.
Main components identified in QD.
| Peak | tR (min) | Assigned identity | Molecular formula |
|---|---|---|---|
| 1 | 0.976 | Butanedioic acid | C4H6O4 |
| 2 | 5.771 | Isatin | C8H5NO2 |
| 3 | 5.916 | 2,3-Dihydro-4-hydroxy-2-oxo-1H-indole-3-acetic acid | C10H8N2O2 |
| 4 | 6.497 | Deoxyvascinone | C11H10N2O |
| 5 | 7.717 | 10H-indolo [3, 2-b] quinoline | C15H10N2 |
| 6 | 8.884 | 3-(2-Hydroxyphenyl)-4(3H)-quinazolinone | C14H10N2O2 |
| 7 | 8.998 | 10H-indolo[3,2-b]quinoline-11-carboxylic acid amide | C16H11N3O |
| 8 | 9.597 | Tryptanthrin | C15H8N2O2 |
| 9 | 11.491 | Syringin | C17H24O9 |
| 10 | 11.902 | 3-(2-Carboxyphenyl)-4(3H)-quinazolinone | C15H10N2O3 |
| 11 | 13.250 | Indigo | C16H10N2O2 |
| 12 | 14.006 | Indican | C14H17NO6 |
| 13 | 14.158 | Indirubin | C16H10N2O2 |
| 14 | 14.640 | 2-[Cyano(3-indolyl)methylene]-3-indolone | C18H11N3O |
| 15 | 19.153 | Octadecanoic acid | C18H36O3 |
| 16 | 19.332 | Bisindigotin | C32H18N4O2 |
| 17 | 20.554 | Qingdainone | C23H13N3O2 |
| 18 | 20.848 | Betulin | C30H50O2 |
| 19 | 21.460 | Sugiol | C20H28O2 |
| 20 | 22.815 | Rotenol | C23H24O6 |
| 21 | 23.433 | Sitosterol | C32H53N7O2 |
| 22 | 24.699 | Daucosterol | C35H60O6 |
| 23 | 26.831 | Clerosterol | C29H48O |