Some Naturally Occurring Fatty Acids s on name Structure Systematic CH3(CH2)IoCOOH n-Dodecanoi 上 Benzene 2,600 14:0 CH3(CH2)12CO0H n-Tetradecanoic acid Myristic acid 5390.024874 (Latin Myristica meg ge 16:0 CH:(CH2)14CO0H n-Hexadecanoic acid ic acid 63.10.0083348 CH2(H2)1600H n-Octadecanoic acid 6960.0034124 00 CHa(CH2)1BCOOH n-Eicosanoic acid Arachidic acid 76.5 (Latin Arachis legume genus 24:0 CH3(CH2)22CO n- Tetracosanoic acid Lignoceric acid 860 (Latin I wood”+cera,"wax") 16:1(△°) CH3(CH2)s CH-CH(CH2)7C00H cis-9-Hexadecenoic acid Palmitoleic acid 18:1(△°) CH3 (CH2)CH=CH(CH2)7C00H cis-9-Octadecenoic acid ( Lat 13.4 n oleum 18: 2(4.2) CH3(CH2)4CH=CHCH2 CH=- cis, cis-9, 12-0ctadecadienoic Linoleic acid -5 CH(CH2)CO0H ( Greek /inon,“fax") 18:3(49.12.)CH3CH2CH-CHCH2CH- a-Linolenic acid -11 CHCH2CH-CH(CH2)7CO0H Octadecatrienoic acid 20: 4(45.8,1,4) CHa(CH,)4CH=CHCH,CH cis, cis, cis, cis-5, 8, 11, 14- Arachidonic acid 49.5 CHCH.C Icosatetraenoic acid CH(CH2)3( All acids are shown ir nonionized form. At pH 7, all free fatty acids have an ionized carboxylate. Note that numbering of carbon atoms begins at the i carbon TThe prefix n- indicate normalunbranched structure For instance, "dodecanoic" simply indicates 12 carbon atoms, which could be arranged in a varie configuration of each bond is indicated; in biological fatty acids the configuration is almost always cis