Endogenous anandamide-like compound. Lacks affinity for CB1 receptors (Ki > 10 μM), VR1 receptors (EC50 > 10 μM) and anandamide transporters (IC50 > 50 μM) but causes hot-plate analgesia in mice when given orally, and suppresses tonic inflammatory pain. Also endogenous GlyT2 inhibitor.