AChE/BuChE-IN-3 is a potent and blood-brain barrier (BBB) penetrant AChE and BuChE dual inhibitor with IC 50 s of 0.65 μM and 5.77 μM for AChE and BuChE. AChE/BuChE-IN-3 also inhibits Aβ 1-42 aggregation. AChE/BuChE-IN-3 has effectively neuroprotective activities and nearly no toxicity on SH-SY5Y cells. AChE/BuChE-IN-3 can be used for researching Alzheimer's disease.