Tirbanibulin Mesylate (KX2-391 Mesylate) is an inhibitor of Src that targets the peptide substrate site of Src , with GI 50 of 9-60 nM in cancer cell lines. In Vitro Tirbanibulin Mesylate (KX2-391 Mesylate) is a Src inhibitor that is directed to the Src substrate pocket. Tirbanibulin (KX2-391) shows steep dose-response curves against Huh7 (GI 50 =9 nM), PLC/PRF/5 (GI 50 =13 nM), Hep3B (GI 50 =26 nM), and HepG2 (GI 50 =60 nM), four hepatic cell cancer (HCC) cell lines. Tirbanibulin Mesylate (KX2-391 Mesylate) is found to inhibit certain leukemia cells that are resistant to current commercially available drugs, such as those derived from chronic leukemia cells with the T3151 mutation. Tirbanibulin Mesylate (KX2-391 Mesylate) is evaluated in engineered Src driven cell growth assays inNIH3T3/c-Src527F and SYF/c-Src527F cells and exhibits GI 50 with 23 nM and 39 nM, respectively. MCE has not independently confirmed the accuracy of these methods. They are for reference only. In Vivo Orally administered Tirbanibulin Mesylate (KX2-391 Mesylate) is shown to inhibit primary tumor growth and to suppress metastasis, in pre-clinical animal models of cancer. MCE has not independently confirmed the accuracy of these methods. They are for reference only. Form:Solid IC50& Target:GI50: 9 nM (Src, in HuH7 cells), 13 nM (Src, in PLC/PRF/5 cells), 26 nM (Src, in Hep3B cells), 60 nM (Src, in HepG2 cells)