Pelitinib is a cyanoquinoline that irreversibly inhibits the EGFR receptor tyrosine kinase (IC50 = 39 nM). It inhibits HER2 with a much weaker potency (IC50 = 1.2 μM). By disrupting Akt and MAPK pathways, pelitinib can induce apoptosis and suppress the growth of tumor cell lines, displaying particularly strong efficacy against hepatocellular carcinoma cells (IC50s = ~2 μM).