Aβ1–42 aggregation inhibitor 2 (compound 7c) is a potent inhibitor of Aβ1-42 aggregation that plays an important role in Alzheimer's disease research. Aβ1–42 aggregation inhibitor 2 displays excellent antioxidant, metal ions chelating, oxidative stress alleviation, neuroprotective and anti-neuroinflammatory activities.