Table 1 Main components of QDP
Peak | tR (min) | Assigned identity | Molecular formula |
|---|---|---|---|
1 | 0.999 | Butanedioic acid | C4H6O4 |
2 | 5.775 | Isatin | C8H5NO2 |
3 | 5.908 | 2,3-Dihydro-4-hydroxy-2-oxo-1H-indole-3-acetic acid | C10H8N2O2 |
4 | 6.511 | Deoxyvascinone | C11H10N2O |
5 | 7.729 | 10H-indolo [3, 2-b] quinoline | C15H10N2 |
6 | 8.436 | 2,3-Dihydro-3,4-dihydroxy-2-oxo-1H-indole-3-acetonitrile, 3-Cyanomethyl-3,4-dihydroxyoxindole | C10H8N2O3 |
7 | 8.856 | 3-(2-Hydroxyphenyl)-4(3H)-quinazolinone | C14H10N2O2 |
8 | 8.995 | 10H-indolo[3,2-b]quinoline-11-carboxylic acid amide | C16H11N3O |
9 | 9.589 | Tryptanthren | C15H8N2O2 |
10 | 11.515 | Syringin | C17H24O9 |
11 | 11.909 | 3-(2-Carboxyphenyl)-4(3H)-quinazolinone | C15H10N2O3 |
12 | 13.240 | Indigo | C16H10N2O2 |
13 | 13.972 | Indican | C14H17NO6 |
14 | 14.185 | Indirubin | C16H10N2O2 |
15 | 14.658 | 2-[Cyano(3-indolyl)methylene]-3-indolone | C18H11N3O |
16 | 16.612 | 8,11,12-Trihydroxy-9-octadecenoic acid | C19H36O5 |
17 | 17.883 | Anthranilic acid | C7H7NO2 |
18 | 18.492 | Salicylic acid | C7H6O3 |
19 | 19.161 | Octadecanoic acid | C18H36O3 |
20 | 19.343 | Bisindigotin | C32H18N4O2 |
21 | 20.550 | Qingdainone | C23H13N3O2 |
22 | 20.854 | Betulin | C30H50O2 |
23 | 21.463 | Sugiol | C20H28O2 |
24 | 22.801 | Rotenol | C23H24O6 |
25 | 23.417 | Sitosterol | C32H53N7O2 |
26 | 24.686 | Daucosterol | C35H60O6 |
27 | 26.836 | Clerosterol | C29H48O |