The following mass spectra represent a mixed bag of lipids that do not fit conveniently into the main Archive sections.
They can be accessed directly from the tabulated links below, or by scrolling down.
No comments or interpretation are provided here, as the general principles
for most are discussed elsewhere in these web pages.
Further spectra may be added as they become available.
The source of each fatty acid listed is that from which I obtained the spectrum in the course of my research efforts,
not necessarily the optimum source.
All spectra were obtained by GC-MS with Agilent mass spectrometers (various models over ~30 years) at an ionization energy of 70 eV.
Many of the spectra in this section especially were kindly donated by Dr.Isabel Molina (Algoma University, Sault Ste Marie, ON, Canada),
with Mike Pollard & John Ohlrogge (Michigan State University, East Lansing, MI, USA).
Fatty aldehydes - dimethylacetals - ketones
|
| Fatty aldehyde |
M+ |
Fatty aldehyde |
M+ |
| |
| tetradecanal dimethylacetal |
258 |
15-methyl-hexadecanal dimethylacetal |
300 |
| pentadecanal dimethylacetal |
272 |
heptadecanal dimethylacetal |
300 |
| 13-methyl-pentadecanal dimethylacetal |
286 |
octadecanal dimethylacetal |
314 |
| hexadecanal dimethylacetal |
286 |
octadec-9-enal dimethylacetal |
312 |
| 14-methyl-hexadecanal dimethylacetal |
300 |
octadec-11-enal dimethylacetal |
312 |
| |
| nonacosan-15-one |
422 |
| |
Fatty alcohols
|
| Fatty alcohol |
M+ |
Fatty alcohol |
M+ |
| |
| tetradecan-1-ol |
214 |
hexadec-9-en-1-ol |
240 |
| pentadecan-1-ol |
228 |
octadec-9-en-1-ol |
268 |
| hexadecan-1-ol |
242 |
eicos-11-en-1-ol |
296 |
| heptadecan-1-ol |
256 |
docos-13-en-1-ol |
324 |
| octadecan-1-ol |
270 |
tetracos-15-en-1-ol |
352 |
| nonadecan-1-ol |
284 |
|
|
| eicosan-1-ol |
298 |
|
|
| 15-methyl-hexadecan-1-ol |
256 |
phytol |
296 |
Fatty alcohols - nicotinates |
| Fatty alcohol |
M+ |
Fatty alcohol |
M+ |
| |
| dodecanyl (12:0) |
291 |
octadec-9-enyl (9-18:1) |
373 |
| tridecanyl (13:0) |
305 |
octadec-11-enyl (11-18:1) |
373 |
| tetradecanyl (14:0) |
319 |
nonadec-11-enyl (11-19:1) |
387 |
| pentadecanyl (15:0) |
333 |
nonadec-13-enyl (13-19:1) |
387 |
| hexadecanyl (16:0) |
347 |
eicos-11-enyl (11-20:1) |
401 |
| heptadecanyl (17:0) |
361 |
eicos-13-enyl (13-20:1) |
401 |
| octadecanyl (18:0) |
375 |
docos-15-enyl (15-22:1) |
429 |
| eicosanyl (20:0) |
403 |
|
|
|
|
hexadec-9,12-dienyl (9,12-16:2) |
343 |
| 14-methyl-hexadecanyl (anteiso) |
361 |
octadec-9,12-dienyl (9,12-18:2) |
371 |
| 15-methyl-hexadecanyl (iso) |
361 |
octadec-11,14-dienyl (11,14-18:2) |
371 |
|
|
eicos-11,14-dienyl (11,14-20:2) |
399 |
| hexadec-9-enyl (9-16:1) |
345 |
eicos-5,8,11,14,17-pentenyl (20:5 (n-3)) |
393 |
| hexadec-11-enyl (11-16:1) |
345 |
docos-7,10,13,16,19-pentenyl (22:5 (n-3)) |
421 |
| heptadec-9-enyl (9-17:1) |
359 |
|
|
| |
| tetradecan-2-ol |
319 |
hexadecan-2-ol |
347 |
| pentadecan-2-ol |
333 |
|
|
Fatty alcohols - trimethylsilyl ethers (TMS) |
| Fatty alcohol |
M+ |
Fatty alcohol |
M+ |
| |
| hexadecan-1-ol (16:0) |
314 |
triacontan-1-ol (30:0) |
510 |
| heptadecan-1-ol (17:0) |
328 |
dotriacontan-1-ol (32:0) |
538 |
| octadecan-1-ol (18:0) |
342 |
|
|
| eicosan-1-ol (20:0) |
370 |
octadec-9-en-1-ol (9-18:1) |
340 |
| docosan-1-ol (22:0) |
398 |
octadec-9,12-dien-1-ol (9,12-18:2) |
338 |
| tetracosan-1-ol (24:0) |
426 |
eicos-11-en-1-ol (11-20:1) |
368 |
| hexacosan-1-ol (26:0) |
454 |
docos-13-en-1-ol (13-22:1) |
396 |
| octacosan-1-ol (28:0) |
482 |
tetracos-15-en-1-ol (15-24:1) |
424 |
| |
| 18-methyl-nonadecan-1-ol (iso) |
370 |
22-methyl-tetracosan-1-ol (anteiso) |
454 |
| 18-methyl-eicosan-1-ol (anteiso) |
384 |
24-methyl-pentacosan-1-ol (iso) |
368 |
| 20-methyl-heneicosan-1-ol (iso) |
398 |
24-methyl-hexacosan-1-ol (anteiso) |
468 |
| 22-methyl-tricosan-1-ol (iso) |
426 |
|
|
| |
| hexadecan-2-ol |
314 |
nonacosan-15-ol |
496 |
|
|
hentriacontan-16-ol
|
524 |
Fatty alcohols - acetates
|
| Fatty alcohol |
M+ |
Fatty alcohol |
M+ |
| |
| 1-hexadecanyl (16:0) |
284 |
1-hexacosanyl (26:0) |
424 |
| 1-octadecanyl (18:0) |
312 |
1-octadec-9-enyl |
310 |
| 1-tetracosanyl (24:0) |
396 |
1-octadec-9,12-dienyl |
308 |
| hexadecane-2-ol |
284 |
|
|
Alkane-1,2-diols - isopropylidene derivatives
|
| 1,2-Diol |
M+ |
1,2-Diol |
M+ |
| |
| hexadecane-1,2-diol |
298 |
eicosane-1,2-diol |
354 |
| heptadecane-1,2-diol |
312 |
docosane-1,2-diol |
382 |
| octadecane-1,2-diol |
326 |
tetracosane-1,2-diol |
410 |
| nonadecane-1,2-diol |
340 |
|
|
| |
| 14-methyl-pentadecane-1,2-diol (iso) |
298 |
18-methyl-eicosane-1,2-diol (anteiso) |
368 |
| 14-methyl-hexadecane-1,2-diol (anteiso) |
312 |
20-methyl-heneicosane-1,2-diol (iso) |
382 |
| 16-methyl-heptadecane-1,2-diol (iso) |
326 |
20-methyl-docosane-1,2-diol (anteiso) |
396 |
| 16-methyl-octadecane-1,2-diol (anteiso) |
340 |
22-methyl-tricosane-1,2-diol (iso) |
410 |
| 18-methyl-nonadecane-1,2-diol (iso) |
354 |
22-methyl-tetracosane-1,2-diol (anteiso) |
424 |
Alkane diols and polyols - trimethylsilyl ether derivatives |
| Diol/polyol |
M+ |
Diol/polyol |
M+ |
| |
| hexadecane-1,2-diol |
402 |
eicosane-1,2-diol |
458 |
| heptadecane-1,2-diol |
416 |
docosane-1,2-diol |
486 |
| octadecane-1,2-diol |
430 |
tetracosane-1,2-diol |
514 |
| |
| 14-methyl-pentadecane-1,2-diol (iso) |
402 |
18-methyl-eicosane-1,2-diol (anteiso) |
472 |
| 14-methyl-hexadecane-1,2-diol (anteiso) |
416 |
20-methyl-heneicosane-1,2-diol (iso) |
486 |
| 16-methyl-heptadecane-1,2-diol (iso) |
430 |
20-methyl-docosane-1,2-diol (anteiso) |
500 |
| 16-methyl-octadecane-1,2-diol (anteiso) |
444 |
22-methyl-tricosane-1,2-diol (iso) |
514 |
| 18-methyl-nonadecane-1,2-diol (iso) |
458 |
22-methyl-tetracosane-1,2-diol (anteiso) |
528 |
| |
| hexadecane-1,16-diol |
402 |
|
|
| 1,18-dihydroxyoctadec-9-ene |
428 |
1,18-dihydroxyoctadec-6,9-diene |
426 |
| octadecane-1,9,18-triol |
518 |
octadecane-1,9,10,18-tetraol |
606 |
Alkane diols - acetate derivatives |
| Diol/polyol |
M+ |
Diol/polyol |
M+ |
| |
| hexadecane-1,2-diol |
342 |
|
|
| hexadecane-1,16-diol |
342 |
octadecen-9-ene-1,18-diol |
356 |
Monoacylglycerols - bis-trimethylsilyl ethers (TMS) |
| 1-heptadecanoin |
488 |
2-heptadecanoin |
488 |
|
|
2-docosanoin |
558 |
Glycerol ethers - isopropylidene derivatives
|
| Glycerol ether |
M+ |
Glycerol ether |
M+ |
| |
| tetradecyl (14:0) |
328 |
15-methyl-hexadecyl (iso) |
370 |
| hexadecyl (16:0) |
356 |
9-hexadecenyl (9-16:1) |
354 |
| heptadecyl (17:0) |
370 |
9-octadecenyl (9-18:1) |
382 |
| octadecyl (18:0) |
384 |
eicosenyl (20:1) |
410 |
Glycerol ethers - bis-trimethylsilyl ethers (TMS)
|
| Glycerol ether |
M+ |
Glycerol ether |
M+ |
| |
| tetradecyl (14:0) |
432 |
14(15)-methyl-hexadecyl |
474 |
| pentadecyl (15:0) |
446 |
hexadecenyl (16:1) |
458 |
| hexadecyl (16:0) |
460 |
heptadecenyl (17:1) |
472 |
| heptadecyl (17:0) |
474 |
octadecenyl (18:1) |
486 |
| octadecyl (18:0) |
488 |
eicosenyl (20:1) |
514 |
| eicosanyl (20:0) |
516 |
docosenyl (22:1) |
542 |
Sterols and related lipids |
| Sterol |
M+ |
Sterol |
M+ |
| |
| cholestane |
372 |
|
|
| cholesterol |
386 |
lathosterol (5α-cholest-7-en-3β-ol) |
386 |
| desmosterol |
384 |
uvaol |
442 |
| β-sitosterol |
414 |
stigmasterol |
412 |
| campesterol |
400 |
ergosterol |
396 |
| |
| cholestanol |
388 |
coprostanol |
388 |
| campestanol |
402 |
sitostanol (stigmastanol) |
416 |
| |
| cholesterol-TMS ether |
458 |
lanosterol-TMS ether |
498 |
| desmosterol-TMS ether |
456 |
dihydrolanosterol-TMS ether |
500 |
| lathosterol-TMS ether |
458 |
|
|
| campesterol-TMS ether |
472 |
ergosta-7,22-dien-3β-ol-TMS ether |
470 |
| β-sitosterol-TMS ether |
486 |
ergosterol-TMS ether |
468 |
| betulin-TMS ether |
586 |
|
|
| ergosta-7-en-3β-ol-TMS ether |
472 |
zymosterol-TMS ether |
456 |
| ergosta-5,7,9(11),22-tetraen-3β-ol-TMS ether |
466 |
stigmasterol-TMS ether |
484 |
| taraxasterol-TMS ether |
498 |
ψ-taraxasterol-TMS ether |
498 |
| α-spinasterol-TMS ether |
484 |
schottenol-TMS ether |
486 |
|
|
uvaol-TMS ether |
586 |
| α-amyrin-TMS ether |
498 |
β-amyrin-TMS ether |
498 |
| lupeol-TMS ether |
498 |
butyrospermol-TMS ether |
498 |
| |
| cholestanol-TMS ether |
460 |
coprostanol-TMS ether |
460 |
| campestanol-TMS ether |
474 |
sitostanol/stigmastanol-TMS ether |
488 |
| |
| cholesteryl acetate |
428 |
β-sitosteryl acetate |
456 |
| stigmasteryl acetate |
454 |
ergosteryl acetate |
438 |
| β-amyrin-acetate |
468 |
|
|
Aliphatic amides and amines
|
| Lipid |
M+ |
Lipid |
M+ |
| |
| N-palmitoylethanolamide |
299 |
|
|
| |
| N-butyldodecamide |
255 |
N-butyloctadec-9-enamide |
337 |
| N-butyltetradecamide |
283 |
N-butyloctadec-9,12-dienamide |
335 |
| N-butylhexadecamide |
311 |
N-butyloctadec-9,12,15-trienamide |
333 |
| N-butyloctadecamide |
339 |
|
|
| |
| N,N-tetradecylbutylamine |
269 |
N,N,N-tetradecylbutylethylamine |
297 |
| N,N-octadec-9-enylbutylamine |
323 |
N,N,N-octadec-9-enylbutylethylamine |
351 |
Hydrocarbons
|
| Lipid |
M+ |
Lipid |
M+ |
| |
| tetradecane (14:0) |
198 |
hexacosane (26:0) |
366 |
| octadecane (18:0) |
254 |
heptacosane (27:0) |
380 |
| nonadecane (19:0) |
268 |
octacosane (28:0) |
394 |
| eicosane (20:0) |
282 |
nonacosane (29:0) |
408 |
| heneicosane (21:0) |
296 |
triacontane (30:0) |
422 |
| docosane (22:0) |
310 |
hentriacontane (31:0) |
436 |
| tricosane (23:0) |
324 |
|
|
| tetracosane (24:0) |
338 |
|
|
| pentacosane (25:0) |
352 |
octadec-9-ene (9-18:1) |
252 |
| |
| phytadiene |
278 |
squalene |
410 |
Other miscellaneous lipids
|
| Lipid |
M+ |
Lipid |
M+ |
| |
| gamma-tocopherol - TMS ether |
488 |
apiol |
222 |
| myristicin |
192 |
1-allyl-2,3,4,5-tetramethoxybenzene |
238 |
| germacrene D |
204 |
curzerene |
216 |
| furanoeremophil-1-one |
232 |
|
|
| dehydroabietic acid - methyl ester |
314 |
abiet-8-en-18-oic acid methyl ester |
318 |
| pinoresinyl acetate |
442 |
pinoresinol - TMS ether |
502 |
Some additives and contaminants |
| Compound |
M+ |
Compound |
M+ |
| |
| 2,6-di-tert-butyl-4-methyl-phenol (BHT) |
220 |
BHT - TMS ether |
292 |
| 2,6-di-tert-butyl-phenol |
206 |
|
|
| di-butyl-phthalate |
278 |
di-octyl-phthalate |
390 |
| |
| Irgafos 168 |
646 |
Irganox 1076 |
530 |
| |
| decamethylcyclopentasiloxane |
370 |
cyclic polymethylsiloxane (n=8) |
593 |
| dodecamethylcyclohexasiloxane |
444 |
cyclic polymethylsiloxane (n=9) |
666 |
| tetradecamethylcycloheptasiloxane |
519 |
|
|
