Also available in 5 mg, 10 mg, 50 mg, 100 mg, 500 mg and bulk. Please contact Fisher for quotes. 9-Oxononanoic Acid is an oxidized fatty acid, formed by the autoxidation of linoleic acid, which enhances phospholipase A2 (PLA2) activity and increases the production of thromboxane B2 in isolated human plasma.9-Oxononanoic Acid reduces hepatic neofatty acid synthesis and enhances the activity of rat hepatic carnitine palmitoyltransferase, a marker of beta-oxidation. Activity. Purity 98.98%