A potent in vitro inhibitor of sn-1 DAGLα (IC50 = 18 nM); blocks the hydrolysis of sn-1-oleoyl-2-AG, the natural substrate of DAGLα, with a Ki value of 0.7 µM; inhibits the hydrolysis of 2-AG by the monoacylglycerol lipase ABHD6 in membrane preparations (Ki = 0.8 µM).