Potent and selective fatty acid amide hydrolase (FAAH) inhibitor (IC50 values are 3 and 5 nM in human liver and rat brain, respectively). Exhibits no significant inhibitory activity against a variety of receptors, ion channels and enzymes, including human cannabinoid receptors and rat monoacylglycerol lipase. Displays antiallodynic and antihyperalgesic activity in an inflammatory pain model. Purity 99%. MW (observed): 338.4