Used in research settings as a peptide-based probe for studying immune responses, particularly in antigen presentation pathways. It serves as a model epitope for MHC class I molecules, enabling scientists to investigate T-cell activation and immune recognition mechanisms. Commonly employed in assays involving dendritic cells, cytotoxic T lymphocytes, and vaccine development studies. Its trifluoroacetate salt form enhances solubility and stability in biological assays. Widely applied in immunology research to track peptide processing and immune cell interactions in vitro and in vivo.