Molecular Formula C22H23N3O4, Purity ≥98%, Formula Weight 393.4, Synonyms: NSC 718781; A tyrosine kinase inhibitor which inhibits EGFR-associated kinase activity (IC50 = 2.5 M) and tumor growth in human HN5 tumor xenografts in mice with an ED50 value of 9 mg/kg; suppresses cyclin-dependent kinase 2 (Cdk2) activity in breast cancer cells (IC50 = 4.6 M) and JAK2 mutant JAK2V617F positive hematopoietic progenitor cells (IC50 = 5 M).