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The epidermal growth factor receptors (EGFR), whose members include ErbB1 (HER1), ErbB2 (HER2), ErbB3 (HER3), and ErbB4 (HER4), are receptor tyrosine kinases that are often over-expressed in cancer. PF-299804 is a second generation pan-ErbB receptor tyrosine kinase inhibitor (IC50s = 6, 45.7, and 73.7 nM for ErbB1, ErbB2, and ErbB4, respectively) that irreversibly binds to the ATP site in the catalytic domains of ErbB receptors. At 15 mg/kg, it demonstrates antitumor activity ranging from delay in tumor growth to complete regression in various tumor xenograft models expressing either wild-type ErbB or mutant ErbB family members that show resistance to first generation ErbB kinase inhibitors.Formal Name: N-[4-[(3-chloro-4-fluorophenyl)amino]-7-methoxy-6-quinazolinyl]-4-(1-piperidinyl)-(2E)-butenamide. CAS Number: 1110813-31-4. Synonyms: Dacomitinib, PF-299. Molecular Formula: C24H25ClFN5O2. Formula Weight: 469.9. Purity: >98%. Formulation: (Request formulation change), A crystalline solid. Solubility: DMF: 20 mg/ml, DMSO: 20 mg/ml, DMSO:PBS(pH7.2) (1:1): 0.5 mg/ml, Ethanol: 0.3 mg/ml. lambdamax: 234, 254, 342 nm. SMILES: O=C(NC1=C(OC)C=C(N=CN=C2NC3=CC(Cl)=C(F)C=C3)C2=C1)/C=C/CN4CCCCC4. InChi Code: InChI=1S/C24H25ClFN5O2/c1-33-22-14-20-17(24(28-15-27-20)29-16-7-8-19(26)18(25)12-16)13-21(22)30-23(32)6-5-11-31-9-3-2-4-10-31/h5-8,12-15H,2-4,9-11H2,1H3,(H,30,32)(H,27,28,29)/b6-5+. InChi Key: LVXJQMNHJWSHET-AATRIKPKSA-N.
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