Wm. Craig Byrdwell, phd

Resources for Lipid Analysis in the 21st Century

For a conveniently printable .pdf version of this mass list, click HERE

c = cis double bond, t = trans d.b., n– refers to the first double bond position, from the end of the fatty acid chain.

The above list includes only the most common fatty acids.

A more complete list of fatty acids, according to their trivial names, may be found at :

http://www.analyticaldivision.org

Disclaimer:  Not all fragments listed here are observed from every class of phospholipid.  Every possible adduct and most fragments have been listed here for the sake of thoroughness, whether they are actually observed or not. The page for each phospholipid class will be tailored as time permits.

© 2005-2011

The figures and tables on this website are copyrighted in 2005-2011 by William Craig Byrdwell and Byrdwell.com.  Please reference

 

Plasmalogens.com

Fatty Acids and Related Masses

Systematic Fatty Acid Name

Common Fatty Acid Name

Abbrev.

 

Fatty Acid Mass

[RCOO+58]+

[RCO]+

[RCOO]

Triglyceride

Triglyceride

Diglyceride

Diglyceride

 Fatty Acid Methyl Ester

 

 

 

C

 

U

ECN

 

 

 

(– mode)

 

Nominal

 

Nominal

 

Butanoic

Butyric

Bu

4

:

0

4

88.05

145.09

71.05

87.04

302.17

302

215.13

215

102.07

Pentanoic

Valeric

V

5

:

0

5

102.07

159.10

85.07

101.06

344.22

344

243.16

243

116.08

Hexanoic

Caproic

Co

6

:

0

6

116.08

173.12

99.08

115.08

386.27

386

271.19

271

130.10

Heptanoic

Enanthic

En

7

:

0

7

130.10

187.13

113.10

129.09

428.31

428

299.22

299

144.11

Octanoic

Caprylic

Cy

8

:

0

8

144.12

201.15

127.11

143.11

470.36

470

327.25

327

158.13

Nonanoic

Pelargonic

Pg

9

:

0

9

158.13

215.16

141.13

157.12

512.41

512

355.28

355

172.15

Decanoic

Capric

Ca

10

:

0

10

172.15

229.18

155.14

171.14

554.45

554

383.32

383

186.16

Hendecanoic

-----

 

11

:

0

11

186.16

243.20

169.16

185.15

596.50

596

411.35

411

200.18

Dodecanoic

Lauric

La

12

:

0

12

200.18

257.21

183.17

199.17

638.55

638

439.38

439

214.19

Tridecanoic

-----

 

13

:

0

13

214.19

271.23

197.19

213.19

680.60

680

467.41

467

228.21

Tetradecanoic

Myristic

M

14

:

0

14

228.21

285.24

211.21

227.20

722.64

722

495.44

495

242.22

Pentadecanoic

-----

 

15

:

0

15

242.22

299.26

225.22

241.22

764.69

764

523.47

523

256.24

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Hexadecanoic

Palmitic

P

16

:

0

16

256.24

313.27

239.24

255.23

806.74

806

551.50

551

270.26

c-9-Hexadecenoic

Palmitoleic (n-7)

Po

16

:

1

14

254.22

311.26

237.22

253.22

800.69

800

547.47

547

268.24

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heptadecanoic

Margaric

 

17

:

0

17

270.26

327.29

253.25

269.25

848.78

848

579.54

579

284.27

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Octadecanoic

Stearic

S

18

:

0

18

284.27

341.31

267.27

283.26

890.83

890

607.57

607

298.29

c-9-Octadecenoic

Oleic (n-9)

O

18

:

1

16

282.26

339.29

265.25

281.25

884.78

884

603.54

603

296.27

t-9-Octadecenoic

Elaidic

 

18

:

1

16

282.26

339.29

265.25

281.25

884.78

884

603.54

603

296.27

c-9,12-Octadecadienoic

Linoleic (n-9)

L

18

:

2

14

280.24

337.27

263.24

279.23

878.74

878

599.50

599

294.26

c-6,9,12-Octadecatrienoic

g-Linolenic (n-6)

Ln

18

:

3

12

278.22

335.26

261.22

277.22

872.69

872

595.47

595

292.24

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Nonadecanoic

-----

 

19

:

0

19

298.29

355.32

281.28

297.28

932.88

932

635.60

635

312.30

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Eicosanoic

Arachidic

A

20

:

0

20

312.30

369.34

295.30

311.30

974.92

974

663.63

663

326.32

c-9-Eicosenoic

Gadoleic (n-11)

G

20

:

1

18

310.29

367.32

293.28

309.28

968.88

968

659.60

659

324.30

c-11-Eicosenoic

Gondoic (n-9)

Go

20

:

1

18

310.29

367.32

293.28

309.28

968.88

968

659.60

659

324.30

c-8,11,14-Eicosatrienoic

Homo-g-Linolenic (n-6)

hL

20

:

3

14

306.26

363.29

289.25

305.25

956.78

956

651.54

651

320.27

c-5,8,11,14-Eicosatetraenoic

Arachidonic (n-6)

Ao

20

:

4

12

304.24

361.27

287.24

303.23

950.74

950

647.50

647

318.26

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heneicosanoic

-----

 

21

:

0

21

326.32

383.35

309.32

325.31

1016.97

1016

691.66

691

340.33

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Docosanoic

Behenic

B

22

:

0

22

340.33

397.37

323.33

339.33

1059.02

1058

719.69

719

354.35

c-13-Docosenoic

Erucic (n-9)

E

22

:

1

20

338.32

395.35

321.32

337.31

1052.97

1052

715.66

715

352.33

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Tetracosanoic

Lignoceric

Lg

24

:

0

24

368.37

425.40

351.36

367.36

1143.11

1142

775.75

775

382.38

c-15-Tetracosenoic

Nervonic (n-9)

N

24

:

1

22

366.35

423.38

349.35

365.34

1137.06

1136

771.72

771

380.37