Src-I1 (179248-59-0) is a potent and competitive dual site (ATP- and peptide-binding) Src kinase inhibitor (IC50‘s = 44 nM for Src and 88 nM for Lck). Src-I1 also inhibits VEGFR2 (IC50 = 320 nM).
Src Kinase inhibitor 1
lung cancers with EGF receptor abnormalities and is a potential candidate for mol.-targeted therapy
Src Inhibitor-1 may be used in Src kinase-mediated cell signaling studies.
ChEBI: Src Inhibitor-1 is a member of the class of quinazolines that is quinazoline which is substituted at position 4 by a p-phenoxyanilino group and at positions 6 and 7 by methoxy groups. It is a potent, competitive dual site (both the ATP- and peptide-binding) Src kinase inhibitor. Src Inhibitor-1 is one of the 'gold standards' for Src kinase inhibition that has been shown to use PP1 or PP2 in parallel with Src-I1 to inhbit Src family kinases. It has a role as an EC 2.7.10.2 (non-specific protein-tyrosine kinase) inhibitor. It is a member of quinazolines, a secondary amino compound, an aromatic ether and a polyether.
A potent, selective, dual site, cell-permeable, reversible and ATP-competitive inhibitor of Src tyrosine kinase (IC50 = 44 nM and 88 nM for Src and Lck, respectively). Shown to simultaneously interact with both the ATP- and peptide-binding sites. Inhibits VEGFR2 and c-fms tyrosine kinases only at higher concentrations (IC50 = 320 nM and 30 μM, respectively).
[1] GAOCHAO TIAN. Structural Determinants for Potent, Selective Dual Site Inhibition of Human pp60c-src by 4-Anilinoquinazolines[J]. Biochemistry Biochemistry, 2001, 40 24: 7084-7091. DOI:
10.1021/bi0100586[2] JENNY BAIN. The selectivity of protein kinase inhibitors: a further update.[J]. Biochemical Journal, 2007: 297-315. DOI:
10.1042/bj20070797
