A potent disruptor of microtubules used as a chemotherapeutic compound; inhibits growth of cervical (HeLa), lung (A549), breast (MCF-7), colon (HT-29), ovarian (OVG-1), and pancreatic (PC-Sh) carcinomas with IC50 values ranging from 2.5-7.5 nM; induces mitotic arrest and initiates apoptosis of cancer cells through multiple mechanisms