Table 1.
Wax esters in fossil stomach oil—isomer composition, content and fragments.
| Total carbon atoms of wax esters chains [R1COOR2] | [M]+ | [R1CO2H2]+ | Intensity [R1CO2H2]+ (%) | [R1CO]+ | [R2−1]a | Acid moiety | Alcohol moiety |
|---|---|---|---|---|---|---|---|
| 28 | 424 | 229 | 92.3 | 211 | 196 | C14 | C14 |
| 424 | 285 | 7.7 | 267 | 140 | C18 | C10 | |
| 30 | 452 | 229 | 83.6 | 211 | 224 | C14 | C16 |
| 452 | 257 | 15.5 | 239 | 196 | C16 | C14 | |
| 452 | 285 | 0.90 | 267 | 252 | C18 | C12 | |
| 32 | 480 | 257 | 91.3 | 239 | 210 | C16 | C16 |
| 480 | 229 | 5.9 | 211 | 238 | C14 | C18 | |
| 480 | 285 | 2.8 | 267 | (182) | C18 | C14 | |
| 34 | 508 | 285 | 55.8 | 267 | 224 | C18 | C16 |
| 508 | 257 | 44.2 | 239 | (252) | C16 | C18 |
aFragments in brackets are not visible in the spectrum.