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Afatinib is an irreversible inhibitor of epidermal growth factor receptor (EGFR) and ErbB2 (IC50s = 0.5 and 14 nM, respectively). It increases the cytotoxicity of adriamycin in a concentration-dependent manner in multidrug-resistant A549T lung cancer cells overexpressing P-glycoprotein. Afatinib (20 mg/kg) reduces tumor growth in ErbB2-amplified NCI-N87 and NUGC4 gastric cancer mouse xenograft models. Formulations containing afatinib have been used in the treatment of non-small cell lung cancer.Formal Name: (2E)-N-[4-[(3-chloro-4-fluorophenyl)amino]-7-[[(3S)-tetrahydro-3-furanyl]oxy]-6-quinazolinyl]-4-(dimethylamino)-2-butenamide. CAS Number: 850140-72-6. Synonyms: BIBW 2992. Molecular Formula: C24H25ClFN5O3. Formula Weight: 485.9. Purity: >95%. Formulation: (Request formulation change), A crystalline solid. Solubility: DMF: 20 mg/ml, DMSO: 20 mg/ml, DMSO:PBS (pH 7.2) (1:1): 0.5 mg/ml, Ethanol: 11 mg/ml. lambdamax: 254, 343 nm. SMILES: N(C=1C2=C(C=C(O[C@H]3CCOC3)C(NC(/C=C/CN(C)C)=O)=C2)N=CN1)C4=CC(Cl)=C(F)C=C4. InChi Code: InChI=1S/C24H25ClFN5O3/c1-31(2)8-3-4-23(32)30-21-11-17-20(12-22(21)34-16-7-9-33-13-16)27-14-28-24(17)29-15-5-6-19(26)18(25)10-15/h3-6,10-12,14,16H,7-9,13H2,1-2H3,(H,30,32)(H,27,28,29)/b4-3+/t16-/m0/s1. InChi Key: ULXXDDBFHOBEHA-CWDCEQMOSA-N.
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