a-Cyano-(3,4,5-trihydroxy)cinnamonitrile Tyrphostin A25 Dark yellow solid. PROTECT FROM LIGHT. A cell-permeable, competitive inhibitor of substrate binding on protein tyrosine kinases. Inhibits epidermal growth factor receptor tyrosine kinase (IC50 = 3 µM) and the GTPase activity of transducin (IC50 = 7 µM). Inhibits neuromedin B-induced phosphorylation of p125FAK (focal adhesion kinase). Blocks the induction of inducible nitric oxide synthase in glial cells. Induces apoptosis in human leukemic cell lines. Purity: ≥98% by HPLC. CAS 118409-58-8. Ref.: Jaleel, M., et al. 2004. Biochemistry 43, 8247. Tsuda, T., et al. 1997. Biochemistry 36, 16328. Wolbring, G., et al. 1994. J. Biol. Chem. 269, 22470. Bergamaschi, G., et al. 1993. Leukemia 7, 2012. Piontek, M., et al. 1993. Anticancer Res. 13, 2119. Bilder, G.E., et al. 1991. Am. J. Physiol. 260, C721. Gazit, A., et al. 1989. J. Med. Chem. 32, 2344. Yaish, P., et al. 1988. Science 242, 933. |