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4,4-Dimethyloxazoline (DMOX) Derivatives of Fatty Acids


Archive of Mass Spectra



The following mass spectra of DMOX derivatives of fatty acids can be accessed directly from the tabulated links below. No comments or interpretation are provided here, as the general principles are discussed elsewhere in these web pages. Further spectra will 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.


DMOX derivatives of saturated straight-chain fatty acids (including those labelled with stable isotopes)
Fatty acid M+ Fatty acid M+
 
hexanoate (6:0) 169 nonadecanoate (19:0) 351
octanoate (8:0) 197 eicosanoate (20:0) 365
nonanoate (9:0) 211 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 nonacosanoate (29:0) 491
octadecanoate (18:0) 337 triacontanoate (30:0) 505
 
3,3-D-hexadecanoate 311 17,18-D-octadecanoate 339
4,4-D-hexadecanoate 311 D35-octadecanoate 372
16,17-D-octadecanoate 339 2,2-1H,D33-octadecanoate 370
 
2-13C-hexadecanoate 310 1-13C-octadecanoate 338

DMOX derivatives of saturated branched-chain fatty acids
Fatty acid M+ Fatty acid M+
 
8-methyl-decanoate (anteiso) 239 20-methyl-heneicosanoate (iso) 393
10-methyl-undecanoate (iso) 253
10-methyl-dodecanoate (anteiso) 267 15-methyl-docosanoate 407
11-methyl-dodecanoate (iso) 267 20-methyl-docosanoate (anteiso) 407
12-methyl-tridecanoate (iso) 281 21-methyl-docosanoate (iso) 407
3-methyl-tetradecanoate 295
9-methyl-tetradecanoate 295 22-methyl-tricosanoate (iso) 421
12-methyl-tetradecanoate (anteiso) 295 18-methyl-tetracosanoate 435
13-methyl-tetradecanoate (iso) 295 22-methyl-tetracosanoate (anteiso) 435
3-methyl-pentadecanoate 309 23-methyl-tetracosanoate (iso) 435
14-methyl-pentadecanoate (iso) 309 24-methyl-pentacosanoate (iso) 449
10-methyl-hexadecanoate 323 20-methyl-hexacosanoate 463
14-methyl-hexadecanoate (anteiso) 323 24-methyl-hexacosanoate (anteiso) 463
15-methyl-hexadecanoate (iso) 323 26-methyl-heptacosanoate (iso) 477
14-methyl-heptadecanoate 337 26-methyl-octacosanoate (anteiso) 491
16-methyl-heptadecanoate (iso) 337 28-methyl-nonacosanoate (iso) 505
10-methyl-octadecanoate 351 28-methyl-triacontanoate (anteiso) 519
11-methyl-octadecanoate 351 30-methyl-hentriacontanoate (iso) 533
16-methyl-octadecanoate (anteiso) 351 30-methyl-dotriacontanoate (anteiso) 547
18-methyl-nonadecanoate (iso) 365 32-methyl-tritriacontanoate (iso) 561
14-methyl-eicosanoate 379 32-methyl-tetratriacontanoate (anteiso) 575
18-methyl-eicosanoate (anteiso) 379
19-methyl-eicosanoate (iso) 379
 
4,8,12-trimethyl-tridecanoate 309 8,10-dimethyl-hexadecanoate 337
2,6,10,14-tetramethyl-pentadecanoate 351 3,7,11,15-tetramethyl-hexadecanoate 365

DMOX derivatives of monoenoic fatty acids
Fatty acid M+ Fatty acid M+
 
9-decenoate (9-10:1) 223 12-octadecenoate (12-18:1) 335
9-dodecenoate (9-12:1) 251 13-octadecenoate (13-18:1) 335
9-tetradecenoate (9-14:1) 279 14-octadecenoate (14-18:1) 335
13-tetradecenoate (13-14:1) 279 15-octadecenoate (15-18:1) 335
5-pentadecenoate (5-15:1) 293 16-octadecenoate (16-18:1) 335
2-hexadecenoate 307 17-octadecenoate (17-18:1) 335
4-hexadecenoate (4-16:1) 307
5-hexadecenoate (5-16:1) 307 9-nonadecenoate (9-19:1) 349
6-hexadecenoate (6-16:1) 307 11-nonadecenoate (11-19:1) 349
7-hexadecenoate (7-16:1) 307
9-hexadecenoate (9-16:1) 307 5-eicosenoate (5-20:1) 363
10-hexadecenoate (10-16:1) 307 7-eicosenoate (7-20:1) 363
11-hexadecenoate (11-16:1) 307 9-eicosenoate (9-20:1) 363
9-heptadecenoate (9-17:1) 321 11-eicosenoate (11-20:1) 363
13-eicosenoate (13-20:1) 363
2-octadecenoate (2-18:1) 335 5-docosenoate (5-22:1) 391
3-octadecenoate (3-18:1) 335 7-docosenoate (7-22:1) 391
4-octadecenoate (4-18:1) 335 13-docosenoate (13-22:1) 391
5-octadecenoate (5-18:1) 335 15-docosenoate (15-22:1) 391
6-octadecenoate (6-18:1) 335 15-tetracosenoate (15-24:1) 419
7-octadecenoate (7-18:1) 335 17-tetracosenoate (17-24:1) 419
8-octadecenoate (8-18:1) 335 17-hexacosenoate (17-26:1) 447
9-octadecenoate (9-18:1) 335 19-hexacosenoate (19-26:1) 447
10-octadecenoate (10-18:1) 335 19-octacosenoate (19-28:1) 475
11-octadecenoate (11-18:1) 335 21-triacontenoate (21-30:1) 503
 
15-methyl-hexadec-9-enoate 321 7-methyl-hexadec-6-enoate 321

DMOX derivatives of dienoic fatty acids
Fatty acid M+ Fatty acid M+
 
5,9-hexadecadienoate (5,9-16:2) 305 8,11-nonadecadienoate (8,11-19:2) 347
7,10-hexadecadienoate (16:2(n-6)) 305 9,12-nonadecadienoate (9,12-19:2) 347
9,12-hexadecadienoate (9,12-16:2) 305
5,8-heptadecadienoate (5,8-17:2) 319 11,14-nonadecadienoate (11,14-19:2) 347
5,9-heptadecadienoate (5,9-17:2) 319
9,12-heptadecadienoate (9,12-17:2) 319  
4,7-octadecadienoate (4,7-18:2) 333 5,11-eicosadienoate (5,11-20:2) 361
5,8-octadecadienoate (5,8-18:2) 333 5,13-eicosadienoate (5,13-20:2) 361
6,9-octadecadienoate (6,9-18:2) 333 8,11-eicosadienoate (8,11-20:2) 361
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 (20:2(n-6)) 361
9,12-octadecadienoate (18:2(n-6)) 333 5,9-docosadienoate (5,9-22:2) 389
10,13-octadecadienoate (10,13-18:2) 333 5,13-docosadienoate (5,13-22:2) 389
11,14-octadecadienoate (11,14-18:2) 333 7,13-docosadienoate (7,13-22:2) 389
12,15-octadecadienoate (12,15-18:2) 333 7,15-docosadienoate (7,15-22:2) 389
13,16-octadecadienoate (13,16-18:2) 333 5,9-tricosadienoate (5,9-23:2) 403
14,17-octadecadienoate (14,17-18:2) 333 5,9-tetracosadienoate (5,9-24:2) 417
2,6-octadecadienoate (2,6-18:2) 333
3,9-octadecadienoate (3,9-18:2) 333 5,9-pentacosadienoate (5,9-25:2) 431
5,9-octadecadienoate (5,9-18:2) 333 5,9-hexacosadienoate (5,9-26:2) 445
7,11-octadecadienoate (7,11-18:2) 333 5,9-heptacosadienoate (5,9-27:2) 459
9,11-octadecadienoate (9,11-18:2) 333 5,9-octacosadienoate (5,9-28:2) 473
10,12-octadecadienoate (10,12-18:2) 333 17,21-octacosadienoate (17,21-28:2) 473
 
23-methyl-tetracosa-5,9-dienoate 431
24-methyl-pentacosa-5,9-dienoate 445 22-methyl-octacosa-5,9-dienoate 487

DMOX derivatives of trienoic fatty acids
Fatty acid M+ Fatty acid M+
 
4,7,10-hexadecatrienoate (4,7,10-16:3) 303 5,8,11-eicosatrienoate (20:3(n-9)) 359
6,9,12-hexadecatrienoate (6,9,12-16:3) 303 5,9,13-eicosatrienoate (5,9,13-20:3) 359
7,10,13-hexadecatrienoate (16:3(n-3)) 303 5,11,14-eicosatrienoate (5,11,14-20:3) 359
9,12,15-hexadecatrienoate (16:3(n-1)) 303 7,11,14-eicosatrienoate (7,11,14-20:3) 359
    7,13,17-eicosatrienoate (7,13,17-20:3) 359
8,11,14-heptadecatrienoate (17:3(n-3)) 317 8,11,14-eicosatrienoate (20:3(n-6)) 359
10,13,16-eicosatrienoate (20:3(n-4)) 359
3,9,12-octadecatrienoate (3,9,12-18:3) 331 11,14,17-eicosatrienoate (20:3(n-3)) 359
5,9,12-octadecatrienoate (5,9,12-18:3) 331
6,8,10-octadecatrienoate (6,8,10-18:3) 331 7,13,16-docosatrienoate (7,13,16-22:3) 387
6,8,12-octadecatrienoate (6,8,12-18:3) 331 5,9,17-tetracosatrienoate (5,9,17-24:3) 415
6,9,12-octadecatrienoate (18:3(n-6)) 331 5,9,17-hexacosatrienoate (5,9,19-26:3) 443
8,11,14-octadecatrienoate (18:3(n-4)) 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
11,14,17-octadecatrienoate (18:3(n-1)) 331 5,9,21-octacosatrienoate (5,9,21-28:3) 471
6,10,12-octadecatrienoate (6,10,12-18:3) 331 5,9,22-nonacosatrienoate (5,9,22-29:3) 485
9c,11t,13c-octadecatrienoate (9,11,13-18:3) 331 5,9,23-triacontatrienoate (5,9,23-30:3) 499
9c,11t,15c-octadecatrienoate (9,11,15-18:3) 331 5,9,25-dotriacontatrienoate (5,9,25-32:3) 527

DMOX derivatives of tetra-, penta- and hexaenoic fatty acids
Fatty acid M+ Fatty acid M+
 
4,7,10,13-hexadecatetraenoate (16:4(n-3)) 301 5,8,11,14-eicosatetraenoate (20:4(n-6)) 357
6,9,12,15-hexadecatetraenoate (16:4(n-1)) 301 5,11,14,17-eicosatetraenoate (5,11,14,17-20:4) 357
8,11,14,17-eicosatetraenoate (20:4(n-3)) 357
5,8,11,14-octadecatetraenoate (18:4(n-4)) 329
5,9,12,15-octadecatetraenoate 329 7,10,13,16-docosatetraenoate (22:4(n-6)) 385
6,9,12,15-octadecatetraenoate (18:4(n-3)) 329 10,13,16,19-docosatetraenoate (22:4(n-3)) 385
8,11,14,17-octadecatetraenoate (18:4(n-1)) 329 5,9,19,23-triacontatetraenoate (5,9,19,23-30:4) 497
6,8,10,15-octadecatetraenoate 329 5,9,21,25-dotriacontatetraenoate (5,9,21,25-32:4)   525
 
5,8,11,14,17-octadecapentaenoate (18:5(n-1)) 327
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 6,9,12,15,19,21-tetracosahexaenoate (24:6(n-3)) 409

DMOX derivatives of acetylenic fatty acids
Fatty acid M+ Fatty acid M+
 
octadeca-6-ynoate 333
octadeca-9-ynoate 333 octadeca-8,10-dien,12-ynoate 329
octadeca-7,9-diynoate 329
octadeca-8,10-diynoate 329 eicosa-11-yn,trans-13-enoate 359
octadeca-9,11-diynoate 329 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
octadeca-14-yn,17-enoate 331 octacosa-19-yn,trans-21-enoate 471
 
octadeca-9-yn,11-trans,13-cis/trans-dienoate 329 octadeca-6-yn-9,12,15-trienoate 327

DMOX 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-cyclopent-2-enyltridec-6-enoate 331
11-cyclopent-2-enylundecanoate 305 15-cyclopentylpentadecanoate 363
13-cyclopentyltridecanoate 335 15-cyclopent-2-enylpentadecanoate 361
13-cyclopent-2-enyltridecanoate 333 1-cyclopent-2-enylpentadec-9-enoate 359
13-cyclopent-2-enyltridec-4-enoate 331
 
6-(6-hexyl-cyclohexadienyl)-hexanoate 331 7-(5-pentyl-cyclohexadienyl)-heptanoate 331
 
11-phenylundecanoate 315 13-phenyltridecanoate 343
15-phenylpentadec-9-enoate 369

DMOX derivatives of oxygenated fatty acids
Fatty acid M+ Fatty acid M+
 
12,13-epoxyoctadec-9-enoate 349 8-(5-hexyl-2-furyl)-octanoate 347
10,13-epoxy-11,12-dimethyl-hexadecadienoate   347 10,13-epoxy-11,12-dimethyl-octadecadienoate 375
10,13-epoxy-11-methyl-octadecadienoate 361 12,15-epoxy-13,14-dimethyl-octadecadienoate 375
12,15-epoxy-13-methyl-eicosadienoate 389
 
12-methoxy-octadec-9-enoate 365
 
15-ethoxypentadecanoate 339 19-ethoxynonadec-9-enoate 393
17-ethoxyheptadec-9-enoate 365 17-methoxyoctadec-9-enoate 365
 
12-hydroxy-dodecanoate 269 20-hydroxy-eicosanoate - TMS 453
15-hydroxy-pentadecanoate 311 22-hydroxy-docosanoate 409
16-hydroxy-hexadecanoate 325 22-hydroxy-docosanoate - TMS 481
16-hydroxy-hexadecanoate - TMS 397 24-hydroxy-tetracosanoate 437
18-hydroxy-octadecanoate 353 24-hydroxy-tetracosanoate - TMS 509
18-hydroxy-octadecanoate - TMS 425
20-hydroxy-eicosanoate 381 26-hydroxy-hexacosanoate - TMS 537
 
9-hydroxy-octadec-12-enoate 351 18-hydroxy-octadec-9-enoate - TMS 423
9-hydroxy-octadec-12-enoate - TMS 423 14-hydroxy-eicos-11-enoate 379
12-hydroxy-octadec-9-enoate 351 14-hydroxy-eicos-11-enoate - TMS 451
12-hydroxy-octadec-9-enoate - TMS 423 20-hydroxy-eicos-11-enoate 379
18-hydroxy-octadec-9-enoate 351 20-hydroxy-eicos-11-enoate - TMS 451
 
15-hydroxy-octadeca-9,12-dienoate 349    
15-hydroxy-octadeca-9,12-dienoate - TMS 421 2-hydroxy-octadeca-9,12,15-trienoate 347

DMOX derivatives of dicarboxylic fatty acids
Fatty acid M+ Fatty acid M+
 
1,6-hexanedioate 252 1,14-tetradecanedioate 364
1,7-heptanedioate 266 1,16-hexadecanedioate 392
1,8-octanedioate 280 1,18-octadecanedioate 420
1,9-nonanedioate 294 1,20-eicosanedioate 448
1,10-decanedioate 308 1,22-docosanedioate 476
1,11-undecanedioate 322 1,24-tetracosanedioate 504
1,12-dodecanedioate 336
 
1,18-octadec-9-enedioate 418 1,20-eicos-9-enedioate 446
1,18-octadec-6,9-dienedioate 416    

DMOX derivatives of halogenated fatty acids
Fatty acid M+ Fatty acid M+
 
16-fluoro-hexadecanoate 327 20-fluoro-eicosanoate 383
18-fluoro-octadecanoate 355 20-fluoro-eicos-9-enoate 381
18-fluoro-octadec-9-enoate 353 20-fluoro-eicos-11-enoate 381
18-fluoro-octadec-9,12-dienoate 351
 
12,12,12-trifluoro-dodecanoate 307 6,6-difluoro-octadecanoate 373
2-fluoro-hexadecanoate 327 10,10-difluoro-octadecanoate 373
2-fluoro-octadecanoate 355 18,18,18-trifluoro-octadecanoate 391
2,2-difluoro-octadecanoate 373
 
2-bromo-hexadecanoate 387/9

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