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XL647 is an orally bioavailable small-molecule receptor tyrosine kinase (RTK) inhibitor with potential antineoplastic activity. XL647 binds to and inhibits several tyrosine receptor kinases that play major roles in tumor cell proliferation and tumor vascularization, including epidermal growth factor receptor (EGFR; ERBB1), epidermal growth factor receptor 2 (HER2; ERBB2), vascular endothelial growth factor receptor (VEGFR), and ephrin B4 (EphB4). This may result in the inhibition of tumor growth and angiogenesis, and tumor regression. Check for active clinical trials or closed clinical trials using this agent.Inhibition of EGFR blocks signal transduction and thus impedes vascularization. XL647 inhibits other receptor tyrosine kinases such as Neu (ErbB2), Flk-1 (KDR), EphB4, and Flt-4. XL647 administered on an intermittent or daily-dosing schedule demonstrated antitumor activity in patients with EGFR-activating mutations. The adverse-event profile was similar for the two dosing schedules.
| Molecular Weight | 491.39 |
| Formula | C24H25Cl2FN4O2 |
| CAS Number | 781613-23-8 (874286-84-7) |
| Solubility (25°C) | DMSO 3 mg/mL |
| Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
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