Amyloid β Protein Fragment 1-40 is widely used in research focused on understanding Alzheimer's disease. It is particularly valuable in studying the formation and behavior of amyloid plaques, which are hallmark features of the disease. Researchers utilize this fragment to investigate the mechanisms of amyloid aggregation, neurotoxicity, and its impact on neuronal function. It is also employed in the development and testing of potential therapeutic agents aimed at inhibiting amyloid aggregation or promoting its clearance. Additionally, this protein fragment serves as a critical tool in in vitro and in vivo models to explore the pathophysiology of Alzheimer's and to evaluate diagnostic biomarkers.