1,2-Dipalmitoyl-sn-glycerol 3-phosphate sodium (compound 3-F7) is a phosphatidic acid and a human endogenous metabolite^[1] In Vitro: Phosphatidic acids are biologically active lipids that can stimulate a large range of responses in many different cell types, such as platelet aggregation, smooth muscle contraction, in vivo vasoactive effects, chemotaxis, expression of adhesion molecules, increased tight junction permeability of endothelial cells, induction of stress fibres, modulation of cardiac contractility, and many others.