AG-825（Tyrphostin C15） is a selective and competitive ErbB2 inhibitor that inhibits tyrosine phosphorylation with an IC50 value of 0.35 μM.AG-825 (Tyrphostin C15) inhibits HER2 and shows anticancer activity in a mouse xenograft model of breast cancer.

Beta-Hydroxyisovalerylshikonin is an inhibitor of protein-tyrosine kinases such as v-Src and EGFR, and has been shown to induce apoptosis in several human tumor cell lines. Beta-Hydroxyisovalerylshikonin significantly decreased viability of HCT116 cells (IC50 values = 30.9 μg/mL).

Vandetanib is an orally bioavailable 4-anilinoquinazoline. Vandetanib selectively inhibits the tyrosine kinase activity of vascular endothelial growth factor receptor 2 (VEGFR2), thereby blocking VEGF-stimulated endothelial cell proliferation and migration and reducing tumor vessel permeability.