Prostaglandin E2 serinol amide

2-Arachidonyl glycerol (2-AG) exhibits cannabinoid agonist activity at the CB1 receptor, is an important endogenous monoglyceride species, and is thus considered to be the natural ligand for the CB1 receptor.{5306,6819} 2-AG can also be metabolized sequentially by COX-2 and specific prostaglandin (PG) synthases to form PG 2-glyceryl esters.{11045} PGE2-SA is a stable analog of PGE2 2-glyceryl ester. The biological activity of PGE2-SA has not yet been determined.