The following mass spectra of pyrrolidine derivatives (pyrrolidides)
of fatty acids can be accessed directly from the tabulated
links below, or by scrolling down. No comments or interpretation are provided here, as the general principles
are discussed elsewhere in these web pages. Further spectra may be added
as they become available.
Spectra are listed under the headings - Pyrrolidine derivatives (of fatty acids) -
Pyrrolidine derivatives of saturated straight-chain fatty acids (including those
labelled with stable isotopes) |
| Fatty acid |
M+ |
Fatty acid |
M+ |
|
| butyrate (4:0) |
141 |
nonadecanoate (19:0) |
351 |
| hexanoate (6:0) |
169 |
eicosanoate (20:0) |
365 |
| octanoate (8:0) |
197 |
heneicosanoate (21:0) |
379 |
| decanoate (10:0) |
225 |
docosanoate (22:0) |
393 |
| undecanoate (11:0) |
239 |
tricosanoate( 23:0) |
407 |
| dodecanoate (12:0) |
253 |
tetracosanoate (24:0) |
421 |
| tridecanoate (13:0) |
267 |
pentacosanoate (25:0) |
435 |
| tetradecanoate (14:0) |
281 |
hexacosanoate (26:0) |
449 |
| pentadecanoate (15:0) |
295 |
heptacosanoate (27:0) |
463 |
| hexadecanoate (16:0) |
309 |
octacosanoate (28:0) |
477 |
| heptadecanoate (17:0) |
323 |
triacontanoate (30:0) |
505 |
| octadecanoate (18:0) |
337 |
|
|
|
| 2,2-D-hexadecanoate |
311 |
4,4-D-hexadecanoate |
311 |
| 3,3-D-hexadecanoate |
311 |
D35-octadecanoate |
372 |
|
| 2-13C-hexadecanoate |
310 |
1-13C-octadecanoate |
338 |
Pyrrolidine derivatives of saturated branched-chain fatty acids
|
| Fatty acid |
M+ |
Fatty acid |
M+ |
|
| 8-methyl-nonanoate (iso) |
225 |
13-methyl-eicosanoate |
379 |
| 8-methyl-decanoate (anteiso) |
239 |
18-methyl-eicosanoate (anteiso) |
379 |
| 10-methyl-undecanoate (iso) |
253 |
19-methyl-eicosanoate (iso) |
379 |
| 10-methyl-dodecanoate (anteiso) |
267 |
20-methyl-heneicosanoate (iso) |
393 |
| 12-methyl-tridecanoate (iso) |
281 |
15-methyl-docosanoate |
407 |
| 3-methyl-tetradecanoate |
295 |
20-methyl-docosanoate (anteiso) |
407 |
| 9-methyl-tetradecanoate |
295 |
21-methyl-docosanoate (iso) |
407 |
| 12-methyl-tetradecanoate (anteiso) |
295 |
22-methyl-tricosanoate (iso) |
421 |
| 13-methyl-tetradecanoate (iso) |
295 |
17-methyl-tetracosanoate |
435 |
| 13-methyl-pentadecanoate (anteiso) |
309 |
22-methyl-tetracosanoate (anteiso) |
435 |
| 14-methyl-pentadecanoate (iso) |
309 |
23-methyl-tetracosanoate (iso) |
435 |
| 10-methyl-hexadecanoate |
323 |
24-methyl-pentacosanoate (iso) |
449 |
| 14-methyl-hexadecanoate (anteiso) |
323 |
21-methyl-hexacosanoate |
463 |
| 15-methyl-hexadecanoate (iso) |
323 |
24-methyl-hexacosanoate (anteiso) |
463 |
| 14-methyl-heptadecanoate |
337 |
26-methyl-heptacosanoate (iso) |
477 |
| 16-methyl-heptadecanoate (iso) |
337 |
26-methyl-octacosanoate (anteiso) |
491 |
| 11-methyl-octadecanoate |
351 |
28-methyl-nonacosanoate (iso) |
505 |
| 16-methyl-octadecanoate (anteiso) |
351 |
28-methyl-triacontanoate (anteiso) |
519 |
| 17-methyl-octadecanoate (iso) |
351 |
30-methyl-hentriacontanoate (iso) |
533 |
| 18-methyl-nonadecanoate (iso) |
365 |
30-methyl-dotriacontanoate (anteiso) |
547 |
|
| 4,8,12-trimethyl-tridecanoate |
309 |
8,10-dimethyl-hexadecanoate |
337 |
|
|
3,7,11,15-tetramethyl-hexadecanoate |
365 |
Pyrrolidine derivatives of monoenoic fatty acids
|
| Fatty acid |
M+ |
Fatty acid |
M+ |
|
| 9-tetradecenoate (9-14:1) |
279 |
5-hexadecenoate (5-16:1) |
307 |
| 2-hexadecenoate |
307 |
9-hexadecenoate (9-16:1) |
307 |
| 3t-hexadecenoate |
307 |
11-hexadecenoate (11-16:1) |
307 |
| 4-hexadecenoate (4-16:1) |
307 |
|
|
|
| 8-heptadecenoate (8-17:1) |
321 |
9-heptadecenoate (9-17:1) |
321 |
|
| 2-octadecenoate (2-18:1) |
335 |
10-octadecenoate (10-18:1) |
335 |
| 3t-octadecenoate (3-18:1) |
335 |
11-octadecenoate (11-18:1) |
335 |
| 4-octadecenoate (4-18:1) |
335 |
12-octadecenoate (12-18:1) |
335 |
| 5-octadecenoate (5-18:1) |
335 |
13-octadecenoate (13-18:1) |
335 |
| 6-octadecenoate (6-18:1) |
335 |
14-octadecenoate (14-18:1) |
335 |
| 7-octadecenoate (7-18:1) |
335 |
15-octadecenoate (15-18:1) |
335 |
| 8-octadecenoate (8-18:1) |
335 |
16-octadecenoate (16-18:1) |
335 |
| 9-octadecenoate (9-18:1) |
335 |
17-octadecenoate (17-18:1) |
335 |
|
| 5-eicosenoate (5-20:1) |
363 |
11-eicosenoate (11-20:1) |
363 |
| 7-eicosenoate (7-20:1) |
363 |
13-eicosenoate (13-20:1) |
363 |
|
| 7-docosenoate (7-22:1) |
391 |
13-docosenoate (13-22:1) |
391 |
| 11-docosenoate (11-22:1) |
391 |
15-docosenoate (15-22:1) |
391 |
|
| 15-tetracosenoate (15-24:1) |
419 |
19-hexacosenoate (19-26:1) |
447 |
| 17-tetracosenoate (17-24:1) |
419 |
19-octacosenoate (19-28:1) |
475 |
| 17-hexacosenoate (17-26:1) |
447 |
21-triacontenoate (21-30:1) |
503 |
|
| 7-methyl-hexadec-6-enoate |
321 |
|
|
Pyrrolidine derivatives of dienoic fatty acids
|
| Fatty acid |
M+ |
Fatty acid |
M+ |
|
| 5,9-hexadecadienoate (5,9-16:2) |
305 |
2,6-octadecadienoate (2,6-18:2) |
333 |
| 9,12-hexadecadienoate (9,12-16:2) |
|
3.9-octadecadienoate (3,9-18:2) |
333 |
| 5,9-heptadecadienoate (5,9-17:2) |
305 |
7,11-octadecadienoate (7,11-18:2) |
333 |
| 9,12-heptadecadienoate (9,12-17:2) |
319 |
8,12-octadecadienoate (8,12-18:2) |
333 |
|
319 |
9,11-octadecadienoate (9,11-18:2) |
333 |
| 4,7-octadecadienoate (4,7-18:2) |
333 |
10,12-octadecadienoate (10,12-18:2) |
333 |
| 5,8-octadecadienoate (5,8-18:2) |
333 |
9,13-eicosadienoate (9,13-20:2) |
361 |
| 6,9-octadecadienoate (6,9-18:2) |
333 |
11,14-eicosadienoate (11,14-20:2) |
361 |
| 7,10-octadecadienoate (7,10-18:2) |
333 |
5,13-docosadienoate (5,13-22:2) |
389 |
| 8,11-octadecadienoate (8,11-18:2) |
333 |
7,13-docosadienoate (7,13-22:2) |
389 |
| 9,12-octadecadienoate (18:2(n-6)) |
333 |
7,15-docosadienoate (7,15-22:2) |
389 |
| 10,13-octadecadienoate (10,13-18:2) |
333 |
5,9-tricosadienoate (5,9-23:2) |
403 |
| 11,14-octadecadienoate (11,14-18:2) |
333 |
5,9-tetracosadienoate (5,9-24:2) |
417 |
| 12,15-octadecadienoate (12,15-18:2) |
333 |
5,9-pentacosadienoate (5,9-25:2) |
431 |
| 13,16-octadecadienoate (13,16-18:2) |
333 |
5,9-hexacosadienoate (5,9-26:2) |
445 |
| 14,17-octadecadienoate (14,17-18:2) |
333 |
17,21-octacosadienoate (17,21-28:2) |
473 |
|
| 23-methyl-tetracosa-5,9-dienoate |
431 |
24-methyl-pentacosa-5,9-dienoate |
445 |
Pyrrolidine derivatives of polyunsaturated fatty acids
|
| Fatty acid |
M+ |
Fatty acid |
M+ |
|
| 7,10,13-hexadecatrienoate (16:3(n-3)) |
303 |
5,8,11-eicosatrienoate (20:3(n-9)) |
359 |
| 9,12,15-hexadecatrienoate (16:3(n-1)) |
303 |
5,9,13-eicosatrienoate (5,9,13-20:3) |
359 |
| 8,11,14-heptadecatrienoate (17:3(n-3)) |
317 |
5,11,14-eicosatrienoate (5,11,14-20:3) |
359 |
| |
|
8,11,14-eicosatrienoate (20:3(n-6)) |
359 |
| 3,9,12-octadecatrienoate (3,9,12-18:3) |
331 |
7,13,16-docosatrienoate (7,13,16-22:3) |
387 |
| 5,9,12-octadecatrienoate (5,9,12-18:3) |
331 |
5,9,17-hexacosatrienoate (5,9,17-26:3) |
443 |
| 6,9,12-octadecatrienoate (18:3(n-6)) |
331 |
5,9,19-hexacosatrienoate (5,9,19-26:3) |
443 |
| 9,12,15-octadecatrienoate (18:3(n-3)) |
331 |
5,9,19-octacosatrienoate (5,9,19-28:3) |
471 |
|
| 6,9,12,15-octadecatetraenoate (18:4(n-3)) |
329 |
7,10,13,16-docosatetraenoate (22:4(n-6)) |
385 |
| 5,8,11,14-eicosatetraenoate (20:4(n-6)) |
357 |
|
|
|
| 5,8,11,14,17-eicosapentaenoate (20:5(n-3)) |
355 |
4,7,10,13,16-docosapentaenoate (22:5(n-6)) |
383 |
| 6,9,12,15,18-heneicosapentaenoate (21:5(n-3)) |
369 |
|
|
|
| 4,7,10,13,16,19-docosahexaenoate (22:6(n-3)) |
381 |
6,9,12,15,18,21-tetracosahexaenoate (24:6(n-3)) |
409 |
Pyrrolidine derivatives of acetylenic fatty acids
|
| Fatty acid |
M+ |
Fatty acid |
M+ |
|
| octadeca-9-ynoate |
333 |
docosa-13-yn,trans-15-enoate |
387 |
| octadeca-9-yn,trans-11-enoate |
331 |
tetracosa-15-yn,trans-17-enoate |
415 |
| octadeca-9-en,12-ynoate |
331 |
hexacosa-17-yn,trans-19-enoate |
443 |
| eicosa-11-yn,trans-13-enoate |
359 |
|
|
Pyrrolidine derivatives of natural cyclic fatty acids
|
| Fatty acid |
M+ |
Fatty acid |
M+ |
|
| 9,10-methylene-hexadecanoate |
321 |
11,12-methylene-octadecanoate |
349 |
| 9,10-methylene-octadecanoate |
349 |
|
|
|
| 8.9-methylene-heptadec-8-enoate |
333 |
9,10-methylene-octadec-9-enoate |
347 |
|
| 11-cyclopentylundecanoate |
307 |
13-cyclopentyltridecanoate |
335 |
| 11-cyclopent-2-enylundecanoate |
305 |
15-cyclopent-2-enylpentadecanoate |
361 |
| 13-cyclopent-2-enyltridecanoate |
333 |
15-cyclopent-2-enylpentadec-9-enoate |
359 |
| 13-cyclopent-2-enyltridec-4-enoate |
331 |
|
|
|
| 11-phenyl-undecanoate |
315 |
13-phenyl-tridecanoate |
343 |
|
|
15-phenyl-pentadec-9-enoate |
369 |
Pyrrolidine derivatives of oxygenated fatty acids
|
| Fatty acid |
M+ |
Fatty acid |
M+ |
|
| 12,13-epoxy-octadec-9-enoate |
349 |
09,10-epoxy-octadec-12-enoate |
349 |
|
| 15-hydroxyhexadecanoate |
325 |
9-hydroxy-octadec-12-enoate |
351 |
| 15-hydroxyhexadecanoate - TMS ether |
397 |
9-hydroxy-octadec-12-enoate - TMS ether |
423 |
| 16-hydroxyhexadecanoate |
325 |
12-hydroxy-octadec-9-enoate |
351 |
| 16-hydroxyhexadecanoate - TMS ether |
397 |
12-hydroxy-octadec-9-enoate - TMS ether |
423 |
| |
|
14-hydroxy-eicos-11-enoate |
379 |
| 17-hydroxyoctadecanoate |
353 |
14-hydroxy-eicos-11-enoate - TMS ether |
451 |
|
| 3-hydroxydecanoate |
241 |
2-hydroxyheptadecanoate |
339 |
| 2-hydroxydodecanoate |
269 |
2-hydroxyoctadecanoate |
353 |
| 3-hydroxydodecanoate |
269 |
2-hydroxydocosanoate |
409 |
| 2-hydroxytetradecanoate |
297 |
2-hydroxytricosanoate |
423 |
| 3-hydroxytetradecanoate |
297 |
2-hydroxytetracosanoate |
437 |
| 2-hydroxypentadecanoate |
311 |
2-hydroxypentacosanoate |
451 |
| 2-hydroxyhexadecanoate |
325 |
2-hydroxyhexacosanoate |
465 |
|
| 2-hydroxy-16-methyl-heptadecanoate |
353 |
2-hydroxy-octadeca-9,12,15-trienoate |
347 |
|
| 12-methoxy-octadec-9-enoate |
365 |
|
|
Pyrrolidine derivatives of dicarboxylic fatty acids
|
| Fatty acid |
M+ |
Fatty acid |
M+ |
|
| 1,9-nonanedioate |
294 |
1,12-dodecanedioate |
336 |
| 1,11-undecanedioate |
322 |
1,18-octadecanedioate |
420 |
Pyrrolidine derivatives of fluorinated fatty acids
|
| Fatty acid |
M+ |
Fatty acid |
M+ |
|
| 18-fluoro-octadecanoate |
355 |
20-fluoro-eicosanoate |
383 |
| 18-fluoro-octadec-9-enoate |
353 |
20-fluoro-eicos-11-enoate |
381 |
| 18-fluoro-octadec-9,12-dienoate |
351 |
|
|
