The molecule is a hydroxy fatty acid anion that is the conjugate base of 18-hydroxyarachidonic acid, arising from deprotonation of the carboxy group; major species at pH 7.3. It is a hydroxy fatty acid anion, a long-chain fatty acid anion and a polyunsaturated fatty acid anion. It is a conjugate base of a 18-HETE.
(5Z,8Z,11Z,14Z)-18-hydroxyicosa-5,8,11,14-tetraenoate