Tyrphostin A25

**Semantic type:** Amino Acid, Peptide, or Protein|Pharmacologic Substance

**Definition:** A member of the tyrphostin family of tyrosine kinase inhibitors that competitively binds and inhibits epidermal growth factor receptor and GTPase activity of transducin and induces apoptosis in human leukemic cell lines. (NCI)

**Synonyms:** - 4,5-Trihydroxybenzylidene malononitrile - AG 82