β-amyloid 1-11 is a peptide fragment derived from the larger β-amyloid protein, which is closely associated with Alzheimer's disease. Its primary application lies in neuroscience and medical research, where it is used as a model to study the mechanisms of amyloid aggregation and its role in neurodegenerative diseases. Researchers utilize this peptide to investigate the early stages of amyloid plaque formation, which is a hallmark of Alzheimer's. It is also employed in the development and testing of diagnostic tools, such as imaging agents and biomarkers, to detect amyloid-related pathologies in the brain. Additionally, β-amyloid 1-11 serves as a critical component in the design of therapeutic strategies, including vaccines and antibodies, aimed at targeting and neutralizing harmful amyloid aggregates. Its small size and specific sequence make it a valuable tool for understanding the structural and functional aspects of amyloidogenesis.