PF-562271 (besylate)

Focal adhesion kinase (FAK) and proline-rich tyrosine kinase 2 (PYK2) are non-receptor tyrosine kinases that constitute the FAK subfamily and play a vital role in many oncogenic pathways. PF-562271 is an ATP-competitive, reversible inhibitor of FAK (IC50 = 1.5 nM) that demonstrates 10-fold reduced potency for PYK2 (IC50 = 14 nM) and >100-fold selectivity against other protein kinases. PF-562271 inhibits FAK phosphorylation with an EC50 value of 93 ng/ml in glioblastoma-bearing mice and has been shown to regress tumors in multiple xenograft models.Formal Name: N-[3-[[[2-[(2,3-dihydro-2-oxo-1H-indol-5-yl)amino]-5-(trifluoromethyl)-4-pyrimidinyl]amino]methyl]-2-pyridinyl]-N-methyl-methanesulfonamide, monobenzenesulfonate. CAS Number: 939791-38-5. Molecular Formula: C21H20F3N7O3S . C6H6O3S. Formula Weight: 665.7. Purity: >98%. Formulation: (Request formulation change), A crystalline solid. Solubility: DMF: 0.25 mg/ml, DMSO: 1 mg/ml, DMSO:PBS (pH 7.2) (1:1): 0.5 mg/ml. lambdamax: 204, 262 nm. SMILES: CN(S(C)(=O)=O)C1=C(CNC2=C(C(F)(F)F)C=NC(NC3=CC=C(NC(C4)=O)C4=C3)=N2)C=CC=N1.OS(C5=CC=CC=C5)(=O)=O. InChi Code: InChI=1S/C21H20F3N7O3S.C6H6O3S/c1-31(35(2,33)34)19-12(4-3-7-25-19)10-26-18-15(21(22,23)24)11-27-20(30-18)28-14-5-6-16-13(8-14)9-17(32)29-16,7-10(8,9)6-4-2-1-3-5-6/h3-8,11H,9-10H2,1-2H3,(H,29,32)(H2,26,27,28,30),1-5H,(H,7,8,9). InChi Key: LKLWTLXTOVZFAE-UHFFFAOYSA-N.