CTCE 9908 TFA is primarily used in research settings as a potent CXCR4 antagonist. It plays a significant role in studying the CXCR4 receptor's function, which is involved in various biological processes such as cell migration, immune response, and cancer metastasis. Researchers utilize it to investigate the mechanisms of cancer progression, particularly in understanding how tumor cells spread to distant organs. Additionally, it is employed in studies related to HIV infection, as the CXCR4 receptor is a co-receptor for viral entry into immune cells. CTCE 9908 TFA is also explored in the context of stem cell mobilization, where it helps in understanding the movement of hematopoietic stem cells from bone marrow to the bloodstream, which is crucial for stem cell transplantation therapies. Its application extends to preclinical studies aimed at developing therapeutic strategies for cancer, HIV, and other diseases involving the CXCR4 pathway.