FK 3311 is primarily used in research settings as a selective antagonist for the formyl peptide receptor 2 (FPR2), which plays a role in inflammatory and immune responses. It is utilized to study signaling pathways involved in inflammation, particularly in models of chronic inflammatory diseases and neurodegenerative conditions. Its application allows scientists to probe the functional roles of FPR2 in cellular migration, cytokine release, and phagocytosis. Due to its specificity, FK 3311 serves as a valuable tool compound in developing a deeper understanding of innate immunity and potential therapeutic targets in inflammatory disorders.