Table 4 Compounds identified in T. officinale fraction 9 by HPLC-PDA-ESI-MS/MS
From: Taraxacum officinale and Urtica dioica extracts inhibit dengue virus serotype 2 replication in vitro
Compound | tR, min | UVmax, nm | [M-H], m/z | MS2 – MS3 | |
|---|---|---|---|---|---|
Fragment ions, m/z | |||||
1 | Caffeoyl hexoside | 13.5 | 290 | 341 | 179, 135 |
2 | 5-O-Caffeoylquinic acid | 20.3 | 326 | 353 | 191 |
3 | Caffeic acid | 23.5 | 322 | 179 | 135 |
4 | Quercetin diglycoside | 25.2 | 358 | 595 | 463, 301 |
5 | Quercetin diglycoside | 29.9 | 358 | 595 | 463, 301 |
6 | Luteolin diglycoside | 38.6 | 338 | 609 | 285 |
7 | Quercetin-3-O-rutinoside | 45.4 | 358 | 609 | 301 |
8 | Luteolin-7-O-rutinoside | 46.1 | 348 | 593 | 285 |
9 | Luteolin-7-O-glucoside | 47.5 | 346 | 447 | 285 |
10 | Chicoric acid | 48.4 | 328 | 473 | 311, 179 |
11 | Chicoric acid | 51.7 | 328 | 473 | 311, 179, 149 |
12 | Luteolin-7-O-rutinoside | 53.2 | 348 | 593 | 285 |
13 | 3,5-di-O-Caffeoylquinic acid | 54.1 | 325 | 515 | 353, 191 |
14 | 4,5-di-O-Caffeoylquinic acid | 60.0 | 327 | 515 | 353, 179, 173 |