SB-743921 (free base)

SB-743921 free base is a potent selective inhibitor of the mitotic kinesin KSP (Eg5), with a Ki of 0.1 nM. SB-743921 free base can induce mitotic arrest, block cell cycle progression, induce apoptosis, and can be used in the research of myeloma, leukemia and other diseases[1][2].