Amylin (AMY3) receptor antagonist. Inhibits andrenomedulin-stimulated cAMP production in vitro. Protects against oligomeric Aβ-induced increase in intracellular Ca2+, activation of PKA, MAPK, Akt and cFOS and cell death in neuronal cell culture. Blocks electrophysiological effects of Aβ in vitro. Cyclic AC 253 also available.

β-Amyloid (29-40) is a fragment of Amyloid-β peptide.Alzheimer's beta amyloid peptide (29-40/42) C-terminal fragments have physical and chemical properties related to those of fusion peptides of viral proteins. The fusion of liposomes can be induced by these peptides in vitro.

β-Amyloid (12-20) is a peptide fragment of β-Amyloid.Thsis peptide contain the amino acid residues VFF at position (18-20), suggesting that this triad has amnestic effects.