Idroxioleic acid ((R)-2-Hydroxyoleic acid; (R)-2-OHOA) is the R enantiomer of (Rac)-Idroxioleic acid. It is an orally active fatty acid known for its ability to modulate the lipid composition and structure of membranes. With demonstrated antitumor activities, Idroxioleic acid plays a significant role in the field of cancer research.