CXCR4-IN-2 (compound A1) is a bifunctional fluorinated small molecule that is a potent CXCR4 inhibitor with anticancer activity. CXCR4-IN-2 has cytotoxic ( IC 50 : 60 μg/mL; 72 h) and antiproliferative effects on mouse colorectal cancer (CRC) cells. CXCR4-IN-2 induces cell arrest in the G2/M phase and induces apoptosis.