CA IX/VEGFR-2-IN-3 (Compound 6i) is an inhibitor of Carbonic Anhydrase IX and VEGFR-2 , with IC 50 values of 41 and 48 nM, respectively. CA IX/VEGFR-2-IN-3 exhibits anticancer activity, inhibiting the growth of MCF-7 breast cancer cells (with an IC 50 of 22.33 μM) and mouse fibroblast cell line 3T3 (where cell viability is less than 40% at a concentration of 100 μM). CA IX/VEGFR-2-IN-3 can be used for research in the field of cancer treatment.