2-arachidonoylglycerol is an endocannabinoid and an endogenous agonist of the cannabinoid receptors (CB1 and CB2). It is an ester formed from omega-6-arachidonic acid and glycerol. It has a role as a human metabolite. It is an endocannabinoid and a 2-acylglycerol 20:4. It is functionally related to an arachidonic acid.