Rigosertib
Rigosertib is an N-[2-methoxy-5-({[2-(2,4,6-trimethoxyphenyl)ethenyl]sulfonyl}methyl)phenyl]glycine in which the double bond has E-configuration. It is a non-ATP-competitive inhibitor of PLK1 with an IC50 of 9 nM and exhibits anti-cancer properties. It has a role as a microtubule-destabilising agent, an EC 2.7.11.21 (polo kinase) inhibitor, an apoptosis inducer and an antineoplastic agent. It is a conjugate acid of a rigosertib(1-).