The molecule is an (omega-1)-hydroxy fatty acid that is (2E)-octadec-2-enoic acid in which the 17-pro-R hydrogen is replaced by a hydroxy group. It is an (omega-1)-hydroxy fatty acid, a long-chain fatty acid, an alpha,beta-unsaturated monocarboxylic acid and a hydroxy monounsaturated fatty acid. It derives from a trans-octadec-2-enoic acid.
(E,17R)-17-hydroxyoctadec-2-enoic acid