Table 2.
Collision cross-section (CCS) values of seven flavonolignan standards were measured using an ion mobility-MS system.
| Peak No. | Observed tR (min) | Molecular formula | Neutral mass (Da) | Observed m/z [M–H]− | Observed CCS (Å2) | Compound name |
|---|---|---|---|---|---|---|
| 39 | 9.14 | C27H26O10 | 510.153 | 509.1520 | 229.75 | Tricin 4'-O-[threo-β-p-hydroxyphenyl-(7"-O-methyl)-glyceryl] ether |
| 40 | 9.36 | C27H26O10 | 510.153 | 509.1518 | 219.70 | Tricin 4'-O-[erythro-β-p-hydroxyphenyl-(7"-O-methyl)-glyceryl] ether |
| 41 | 9.47 | C28H28O11 | 540.163 | 539.1641 | 237.84 | Tricin 4'-O-[threo-β-guaiacyl-(7"-O-methyl)-glyceryl] ether |
| 42 | 9.55 | C28H28O11 | 540.163 | 539.1633 | 228.18 | Tricin 4'-O-[erythro-β-guaiacyl-(7"-O-methyl)-glyceryl] ether |
| 44 | 9.79 | C29H28O12 | 568.158 | 567.1584 | 234.58 | Tricin 4'-O-[threo-β-guaiacyl-(9"-O-acetyl)-glyceryl] ether |
| 49 | 11.70 | C30H30O12 | 582.174 | 581.1702 | 245.81 | Tricin 4'-O-[threo-β-guaiacyl-(7"-O-methyl-9"-O-acetyl)-glyceryl] ether |
| 50 | 11.86 | C30H30O12 | 582.174 | 581.1736 | 239.87 | Tricin 4'-O-[erythro-β-guaiacyl-(7"-O-methyl-9"-O-acetyl)-glyceryl] ether |
CCS, collision cross-section value; tR, retention time.