An inhibitor of KIFC1; binds to the KIFC1/microtubule complex and inhibits its microtubule-stimulated activity (IC50 = 300 nM) in an ATP-competitive (Ki = 43 nM) and microtubule-noncompetitive manner; does not inhibit basal KIFC1 activity at a concentration of 100 μM; selective for KIFC1 over a panel of nine kinesin motor proteins at a concentration of 5 μM; AZ82 preferentially induces multipolar spindle formation in cancer cell lines with high numbers of extra chromosomes