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Pyrrolidine Derivatives of Fatty Acids


Archive of Mass Spectra



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. 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.


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-decenoate (9-10:1) 223 4-hexadecenoate (4-16:1) 307
9-dodecenoate (9-12:1) 251 5-hexadecenoate (5-16:1) 307
9-tetradecenoate (9-14:1) 279 9-hexadecenoate (9-16:1) 307
2-hexadecenoate 307 11-hexadecenoate (11-16:1) 307
3t-hexadecenoate 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 3,9-octadecadienoate (3,9-18:2) 333
9,12-hexadecadienoate (9,12-16:2) 305 7,11-octadecadienoate (7,11-18:2) 333
5,8-heptadecadienoate (5,8-17:2) 319 8,12-octadecadienoate (8,12-18:2) 333
5,9-heptadecadienoate (5,9-17:2) 319 9,11-octadecadienoate (9,11-18:2) 333
9,12-heptadecadienoate (9,12-17:2) 319 10,12-octadecadienoate (10,12-18:2) 333
4,7-octadecadienoate (4,7-18:2) 333
5,8-octadecadienoate (5,8-18:2) 333 9,12-nonadecadienoate (9,12-19:2) 347
6,9-octadecadienoate (6,9-18:2) 333    
7,10-octadecadienoate (7,10-18:2) 333 9,13-eicosadienoate (9,13-20:2) 361
8,11-octadecadienoate (8,11-18:2) 333 11,14-eicosadienoate (11,14-20:2) 361
9,12-octadecadienoate (18:2(n-6)) 333 5,13-docosadienoate (5,13-22:2) 389
10,13-octadecadienoate (10,13-18:2) 333 7,13-docosadienoate (7,13-22:2) 389
11,14-octadecadienoate (11,14-18:2) 333 7,15-docosadienoate (7,15-22:2) 389
12,15-octadecadienoate (12,15-18:2) 333 5,9-tricosadienoate (5,9-23:2) 403
13,16-octadecadienoate (13,16-18:2) 333 5,9-tetracosadienoate (5,9-24:2) 417
14,17-octadecadienoate (14,17-18:2) 333 5,9-pentacosadienoate (5,9-25:2) 431
5,9-hexacosadienoate (5,9-26:2) 445
2,6-octadecadienoate (2,6-18:2) 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
6,9,11-octadecatrienoate (6,9,11-18:3) 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
 
6,9,11,15-octadecatetraenoate 329 5,8,11,14-eicosatetraenoate (20:4(n-6)) 357
6,9,12,15-octadecatetraenoate (18:4(n-3)) 329 7,10,13,16-docosatetraenoate (22:4(n-6)) 385
 
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 7,10,13,16,19-docosapentaenoate (22:5(n-3)) 383
 
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 octadeca-8,10-dien-12-ynoate 329

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
 
10,13-epoxy-11,12-dimethyl-hexadecadienoate   347 12,15-epoxy-13,14-dimethyl-octadecadienoate   375
10,13-epoxy-11-methyl-octadecadienoate 361 12,15-epoxy-13,14-dimethyl-eicosadienoate 403
 
3-hydroxydecanoate 241 2-hydroxyoctadecanoate 353
2-hydroxydodecanoate 269 17-hydroxyoctadecanoate 353
3-hydroxydodecanoate 269 20-hydroxyeicosanoate - TMS ether 453
12-hydroxydodecanoate 269 2-hydroxydocosanoate 409
2-hydroxytetradecanoate 297 22-hydroxydocosanoate 409
3-hydroxytetradecanoate 297 22-hydroxydocosanoate - TMS ether 481
2-hydroxypentadecanoate 311 2-hydroxytricosanoate 423
15-hydroxypentadecanoate 311 2-hydroxytetracosanoate 437
2-hydroxyhexadecanoate 325 24-hydroxytetracosanoate 437
15-hydroxyhexadecanoate 325 24-hydroxytetracosanoate - TMS ether 509
15-hydroxyhexadecanoate - TMS ether 397 2-hydroxypentacosanoate 451
16-hydroxyhexadecanoate 325 2-hydroxyhexacosanoate 465
16-hydroxyhexadecanoate - TMS ether 397 26-hydroxyhexacosanoate - TMS ether 537
2-hydroxyheptadecanoate 339  
 
9-hydroxy-octadec-12-enoate 351 18-hydroxy-octadec-9-enoate - TMS 423
9-hydroxy-octadec-12-enoate - TMS ether 423 14-hydroxy-eicos-11-enoate 379
12-hydroxy-octadec-9-enoate 351 14-hydroxy-eicos-11-enoate - TMS ether 451
12-hydroxy-octadec-9-enoate - TMS ether 423 20-hydroxy-eicos-11-enoate - TMS ether 451
18-hydroxy-octadec-9-enoate 351
 
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 1,18-octadecanedioate 420
1,11-undecanedioate 322 1,20-eicosanedioate 448
1,12-dodecanedioate 336 1,22-docosanedioate 476
1,14-tetradecanedioate 364 1,24-tetracosanedioate 504
1,16-hexadecanedioate 392
1,18-octadec-9-enedioate 418

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

Credits/disclaimer Updated: April 21st, 2017 Author: William W. Christie LipidWeb icon