Table 1. Tentative identification of the compounds from TLS.
No. | Compound name | Retention time (min) | Molecular weight | Selected ion (m/z) |
---|---|---|---|---|
1 | schisandrin | 3.26 | 433.2226 | [M+Na] + 455.2020 |
2 | gomisin D | 3.71 | 531.2230 | [M+Na] + 554.2076 |
3 | schisandrol B | 4.14 | 417.1913 | [M+H-H2O] + 399.1750 |
4 | tigloylgomisin H | 5.02 | 501.2248 | [M+Na] + 524.2336 |
5 | pregomisin | 5.23 | 391.2121 | fragment ion |
6 | angeloylgomisin H | 5.73 | 501.2248 | [M+Na] + 524.2322 |
7 | Gomisin K1 | 7.03 | 403.2121 | fragment ion |
8 | Gomisin K3 | 7.21 | 403.2121 | fragment ion |
9 | schisantherin A | 7.40 | 537.2125 | [M+H] + 583.2126 |
10 | schisantherin B | 7.83 | 514.2281 | fragment ion |
11 | gomisin E | 8.86 | 514.2281 | [M+Na] + 537.2086 |
12 | deoxyschisandrin | 10.38 | 417.2277 | [M+Na] + 440.2079 |
The mass spectrometer was operated in positive ionization mode with the capillary voltage at 2.5 kV, and the cone voltage was set to 35 V. Source and desolvation temperatures were set at 130 and 450°C, respectively. The cone and desolvation gas flows were 50 and 800L/h, respectively.