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3.2 Fatty Acids 161

Table 3.6. Saturated fatty acids

Abbreviated Structure Systematic Common name Melting

designation name point

( ◦ C)

A. Even numbered straight chain fatty acids

4:0 CH3,(CH2)2COOH Butanoic acid Butyric acid − 7.9

6:0 CH3(CH2)4COOH Hexanoic acid Caproic acid − 3.9

8:0 CH3(CH2)6COOH Octanoic acid Caprylic acid 16.3

10:0 CH3(CH2)8COOH Decanoic acid Capric acid 31.3

12:0 CH3(CH2)10COOH Dodecanoic acid Lauric acid 44.0

14:0 CH3(CH2)12COOH Tetradecanoic acid Myristic acid 54.4

16:0 CH3(CH2)14COOH Hexadecanoic acid Palmitic acid 62.9

18:0 CH3(CH2)16COOH Octadecanoic acid Stearic acid 69.6

20:0 CH3(CH2)18COOH Eicosanoic acid Arachidic acid 75.4

22:0 CH3(CH2)20COOH Docosanoic acid Behenic acid 80.0

24:0 CH3(CH2)22COOH Tetracosanoic acid Lignoceric acid 84.2

26:0 CH3(CH2)24COOH Hexacosanoic acid Cerotic acid 87.7

B. Odd numbered straight chain fatty acids

5:0 CH3(CH2)3COOH Pentanoic acid Valeric acid − 34.5

7:0 CH3(CH2)5COOH Heptanoic acid Enanthic acid − 7.5

9:0 CH3(CH2)7COOH Nonanoic acid Pelargonic acid 12.4

15:0 CH3(CH2)13COOH Pentadecanoic acid 52.1

17:0 CH3(CH2)15COOH Heptadecanoic acid Margaric acid 61.3

C. Branched chain fatty acids

2,6,10,14-Tetra-methyl-penta-decanoic acid Pristanic acid

3,7,11,15-Tetra-methyl-hexa-decanoic acid Phytanic acid

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