Tyrphostin RG 14620 is a non-phenolic tyrphostin analog, which is selective for the EGFR (EGF receptor). The compound inhibits EGF-stimulated HER14 cell proliferation (IC50=3 μM) as well as tumor growth in vivo. Tyrphostin RG 14620 contains anti-proliferative effects on renal and bladder carcinoma cell lines. Tyrphostin RG 14620 is an inhibitor of Tyrosine Kinase.