Selective inhibitor of the epidermal growth factor receptor (EGFR) (IC50 = 0.3 μM in vitro). Also inhibits and reverses the formation of Aβ42 fibers associated with Alzheimer's disease. Eliminates calcium influx potential when coincubated with amyloid β-peptide (1-42) (Cat.No. 1428); reduces neurotoxicity by blocking Ca2+ influx into neuronal cells.