BuChE-IN-2 is an excellent butyrylcholinesterase ( BuChE ) inhibitor ( IC 50 s of 1.28 μM and 0.67 μM for BuChE and NO). BuChE-IN-2 can inhibit the aggregation of Aβ, ROS formation and chelate Cu 2+ , exhibiting properblood-brain barrier (BBB) penetration. BuChE-IN-2 has potential to research Alzheimer’s disease.