AZD6126, also known as ANG-453, a water-soluble phosphate prodrug of N-acetylcolchinol with potential antiangiogenesis and antineoplastic activities. AZD-6126 is an angiogenesis inhibitor and tubulin inhibitor potentially for the treatment of solid tumours. AZD6126 is converted in vivo into N-acetylcolchinol. N-acetylcolchinol binds to and destabilizes the tubulin cytoskeleton of endothelial cells in tumor blood vessels, which may result in tumor endothelial cel apoptosis, the selective occlusion of tumor blood vessels, cessation of tumor blood flow, and tumor necrosis.