Used as a potent and selective antagonist of the chemokine receptor CXCR4, this compound plays a key role in research related to cancer metastasis, HIV infection, and inflammatory diseases. It inhibits CXCR4-mediated cell migration, making it valuable in studies targeting tumor progression and stem cell mobilization. Its high selectivity and oral bioavailability also make it a candidate for preclinical development in oncology and immunology.