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

 

PhosphatidylEthanolamines.com

 

 

Check out the other Byrdwell.com Websites!

 

PhosphatidylCholines

 

and

 

PhosphatidylSerines

 

and

 

PhosphatidylGlycerols

 

and

 

PhosphatidylInositols

Fatty Acids and Related Masses

 

Systematic Fatty Acid Name

Common Fatty Acid Name

Abbrev.

 

Fatty Acid

Mass

[RCOO+58]+

[RCO]+

[RCOO]–

Pure

Triacylglycerol

Intact

Diacylglycerol

[DAG]+

Fragment

Intact

Monoacylglycerol

 Fatty Acid

Methyl Ester

 

 

 

C

 

U

ECN

 

 

 

(– mode)

(TAG)

(DAG)

 

(MAG)

(FAME)

Butanoic

Butyric

Bu

4

:

0

4

88.05

145.09

71.05

87.04

302.17

232.13

215.13

162.09

102.07

Pentanoic

Valeric

V

5

:

0

5

102.07

159.10

85.07

101.06

344.22

260.16

243.16

176.10

116.08

Hexanoic

Caproic

Co

6

:

0

6

116.08

173.12

99.08

115.08

386.27

288.19

271.19

190.12

130.10

Heptanoic

Enanthic

En

7

:

0

7

130.10

187.13

113.10

129.09

428.31

316.22

299.22

204.14

144.12

Octanoic

Caprylic

Cy

8

:

0

8

144.12

201.15

127.11

143.11

470.36

344.26

327.25

218.15

158.13

Nonanoic

Pelargonic

Pg

9

:

0

9

158.13

215.16

141.13

157.12

512.41

372.29

355.28

232.17

172.15

Decanoic

Capric

Ca

10

:

0

10

172.15

229.18

155.14

171.14

554.45

400.32

383.32

246.18

186.16

Hendecanoic

-----

 

11

:

0

11

186.16

243.20

169.16

185.15

596.50

428.35

411.35

260.20

200.18

Dodecanoic

Lauric

La

12

:

0

12

200.18

257.21

183.17

199.17

638.55

456.38

439.38

274.21

214.19

Tridecanoic

-----

 

13

:

0

13

214.19

271.23

197.19

213.19

680.60

484.41

467.41

288.23

228.21

Tetradecanoic

Myristic

M

14

:

0

14

228.21

285.24

211.21

227.20

722.64

512.44

495.44

302.25

242.22

Pentadecanoic

-----

 

15

:

0

15

242.22

299.26

225.22

241.22

764.69

540.48

523.47

316.26

256.24

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Hexadecanoic

Palmitic

P

16

:

0

16

256.24

313.27

239.24

255.23

806.74

568.51

551.50

330.28

270.26

c-9-Hexadecenoic

Palmitoleic (n-7)

Po

16

:

1

14

254.22

311.26

237.22

253.22

800.69

564.48

547.47

328.26

268.24

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heptadecanoic

Margaric

 

17

:

0

17

270.26

327.29

253.25

269.25

848.78

596.54

579.54

344.29

284.27

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Octadecanoic

Stearic

S

18

:

0

18

284.27

341.31

267.27

283.26

890.83

624.57

607.57

358.31

298.29

c-9-Octadecenoic

Oleic (n-9)

O

18

:

1

16

282.26

339.29

265.25

281.25

884.78

620.54

603.54

356.29

296.27

t-9-Octadecenoic

Elaidic

 

18

:

1

16

282.26

339.29

265.25

281.25

884.78

620.54

603.54

356.29

296.27

c-9,12-Octadecadienoic

Linoleic (n-9)

L

18

:

2

14

280.24

337.27

263.24

279.23

878.74

616.51

599.50

354.28

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

612.48

595.47

352.26

292.24

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Nonadecanoic

-----

 

19

:

0

19

298.29

355.32

281.28

297.28

932.88

652.60

635.60

372.32

312.30

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Eicosanoic

Arachidic

A

20

:

0

20

312.30

369.34

295.30

311.30

974.92

680.63

663.63

386.34

326.32

c-9-Eicosenoic

Gadoleic (n-11)

G

20

:

1

18

310.29

367.32

293.28

309.28

968.88

676.60

659.60

384.32

324.30

c-11-Eicosenoic

Gondoic (n-9)

Go

20

:

1

18

310.29

367.32

293.28

309.28

968.88

676.60

659.60

384.32

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

668.54

651.54

380.29

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

664.51

647.50

378.28

318.26

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heneicosanoic

-----

 

21

:

0

21

326.32

383.35

309.32

325.31

1016.97

708.66

691.66

400.36

340.33

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Docosanoic

Behenic

B

22

:

0

22

340.33

397.37

323.33

339.33

1059.02

736.69

719.69

414.37

354.35

c-13-Docosenoic

Erucic (n-9)

E

22

:

1

20

338.32

395.35

321.32

337.31

1052.97

732.66

715.66

412.36

352.33

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Tetracosanoic

Lignoceric

Lg

24

:

0

24

368.37

425.40

351.36

367.36

1143.11

792.76

775.75

442.40

382.38

c-15-Tetracosenoic

Nervonic (n-9)

N

24

:

1

22

366.35

423.38

349.35

365.34

1137.06

788.73

771.72

440.39

380.37