Description: vMIP-II (1-21) (NT21MP) TFA (TFA is a potent inhibitor of CXCR4. This compound interacts broadly with CC and CXC chemokine receptors. Furthermore, vMIP-II (1-21) TFA inhibits CXCR4 by competing for binding sites with 125I-SDF-1R, exhibiting an IC50 value of 190 nM.