N-[(2-Hydroxy-1-hydroxymethyl)ethyl]-11-oxo-9alpha,15s-dihydroxy-prosta-5z, 13e-dien-1-amide

2-Arachidonyl glycerol (2-AG) exhibits cannabinoid (CB) 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. 2-AG can also be sequentially metabolized by COX-2 and specific PG synthases to form PG 2-glyceryl esters. In activated RAW 264.7 cells, PGD2 2-glyceryl ester is the primary product of 2-AG metabolism in the COX pathway. PGD2 serinol amide (PGD2-SA) is a stable analog of PGD2 2-glyceryl ester. Unlike PGD2 2-glyceryl ester and other fatty acyl 2-glyceryl esters, PGD2-SA will not isomerize to the less active primary (1-glyceryl) ester. The biological activity of PGD2-SA has not yet been determined.