Description
An oxylipin; produced by COX-1 and COX-2 from arachidonic acid or aspirin-acetylated COX-2-mediated oxidation of arachidonic acid; produced by 11(R)-lipoxygenases in the freshwater hydra (H. vulgaris), where it is involved in tentacle regeneration, and in the sea urchin (S. purpuratus)