Ximenynic acid
Ximenynic acid is trans-11-octadecen-9-ynoic acid, a long-chain acetylenic fatty acid.
It was discovered in the fruit kernels of 3 South American ximenia species (and so named). and found to have the formula C18H30O2.
It can be extracted from the fruit kernels of the Santalum obtusifolium (Sandalwood) and the Australian sandalwood Santalum spicatum