Any unsaturated fatty acid containing at least one triple bond in the carbon chain framework.
| Member | Definition | Role |
|---|
| 17-octadecynoic acid | An acetylenic fatty acid that is octadecanoi acid (stearic acid) which has been doubly dehydrogenated at positions 17 and 18 to give the corresponding alkynoic acid. | octadec-17-ynoic acid |
| 2-octynoic acid | An acetylenic fatty acid that is octanoic acid (caprylic acid) which has been doubly dehydrogenated at positions 2 and 3 to give the corresponding alkynoic acid. It is widely used in perfumes, lipstick, and many common food flavourings. | 2-octynoic acid |
| 5,8,11-eicosatriynoic acid | A C20 polyunsaturated fatty acid having three triple bonds in the 5-, 8- and 11-positions. | 5,8,11-icosatriynoic acid |
| dicranin | A trienoic fatty acid, that is octadecanoic acid containing double bonds at positions 9, 12 and 15 and a triple bond at position 6. Isolated from Dicranum scoparium, it exhibits antibacterial activity and inhibitory activity against arachidonate 15-lipoxygenase. | (9Z,12Z,15Z)-octadeca-9,12,15-trien-6-ynoic acid |
| minquartynoic acid | A straight-chain, C18 polyunsaturated fatty acid having four conjugated C#C bonds at positions 9, 11, 13 and 15 as well as an (S)-hydroxy group at position 17. | minquartynoic acid |
| propiolic acid | A terminal acetylenic compound that is a 3-carbon, straight-chain, monounsaturated fatty acid having one acetylenic bond. | propynoic acid |