Signal

δ (ppm)

Proton type

Components²

A

0.86 - 0.91

CH₃

All acids except linolenic acid

B

0.95 - 1.00

CH₃

linolenic acid

C

1.26 - 1.31

-(CH₂)_n-

All fatty acids

D

1.59 - 1.63

-CH₂-CH₂-OCO-

All fatty acids

E

2.04 - 2.08

-CH₂-CH=CH

All unsaturated fatty acids

F

2.28 - 2.34

-CH₂-OCO-

All fatty acids

G

2.75 - 2.82

-CH=CH-CH₂-CH=CH-

Linolenic acid and linoleic acid

H

4.12 - 4.33

-CH₂OCOR

Glycerol

I

5.20 - 5.26¹

>CHOCOR

Glycerol

J

5.24 - 5.37

-CH=CH-

All unsaturated fatty acids