Table 4. Assigned peaks for negative ion mode obtained from the SFE of a single HeLa cell. A number followed by a ‘+’ sign represents the additional number of structures that match the formula listed in the LipidMaps database.
| m/z (error (σ mDa)) | Abundance | RSD | Formula | +isomers | Exact m/z | |
|---|---|---|---|---|---|---|
| 171.139 (±0.3) | 52787 | 51% | C10H20O2 | [M−H]− | +1 | 171.139 |
| 194.994 (±2.0) | 1561 | 76% | C9H8OS2 | [M−H]− | +1 | 194.994 |
| 239.201 (±1.4) | 6906 | 52% | C15H28O2 | [M−H]− | +1 | 239.202 |
| 294.183 (±1.5) | 3139 | 15% | C17H26O4 | [M]− | 294.184 | |
| 299.201 (±2.2) | 20520 | 123% | C20H28O2 | [M−H]− | +1 | 299.202 |
| 301.217 (±0.7) | 19337 | 135% | C20H30O2 | [M−H]− | +1 | 301.217 |
| 303.233 (±0.5) | 8836 | 135% | C20H32O2 | [M−H]− | +42 | 303.233 |
| 381.374 (±1.6) | 279 | 9% | C25H50O2 | [M−H]− | +8 | 381.374 |
| 425.340 (±1.1) | 1659 | 20% | C27H43N3O | [M]− | 425.341 | |
| 455.390 (±1.6) | 1110 | 54% | C31H52O2 | [M−H]− | +1 | 455.389 |
| Tetracosenoic acid | 10299 | 40% | C24H46O2 | [M−H]− | — | 455.389 |