Ras-Net (Elk-3) pathway inhibitor (IC50 = 10 - 20 nM). Indirectly inhibits Net phosphorylation upstream of Erk1/2 activation. Mediates G2-M cell cycle arrest, suppresses growth of multiple cell types (IC50 ~ 2 nM), inhibits angiogenesis and acts as a microtubule depolymerizing agent in vitro.