HDAC/CD13-IN-1 (Compound 12) is an inhibitor of both HDAC and CD13, with IC50 values of 0.34 μM for hCD13, 0.53 μM for porcine CD13, and 0.03, 0.06, and 0.02 μM for HDAC1, HDAC2, and HDAC3, respectively. This compound effectively suppresses the proliferation of MV4-11, K562, Jeko-1, and HL60 cancer cells, with IC50 ranges between 0.25-2.04 μM, and also induces apoptosis in these cells. Furthermore, HDAC/CD13-IN-1 demonstrates capabilities in hindering metastasis and invasion [1].