CAS No. 717907-75-0

Batch: Purity:99.95
PF-562271 (VS-6062) Chemical Structure
Chemical Structure
Check the PF-562271 (VS-6062) product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name N-methyl-N-[3-[[[2-[(2-oxo-1,3-dihydroindol-5-yl)amino]-5-(trifluoromethyl)pyrimidin-4-yl]amino]methyl]-2-pyridinyl]methanesulfonamide
CAS Number 717907-75-0
Molecular Formula

C21H20F3N7O3S

Molecular Weight (MW) 507.49
SMILES CN(C1=C(C=CC=N1)CNC2=NC(=NC=C2C(F)(F)F)NC3=CC4=C(C=C3)NC(=O)C4)S(=O)(=O)C
InChIKey MZDKLVOWGIOKTN-UHFFFAOYSA-N

Biological Activity

PF-562271 is an ATP-competitive, reversible inhibitor of focal adhesion kinase (FAK, IC50 1.5 nM) in cell-free assays. It demonstrates approximately 10-fold selectivity for FAK over Pyk2 and broad selectivity against other protein kinases. By inhibiting FAK autophosphorylation and disrupting downstream integrin signaling, PF-562271 suppresses cancer cell migration, invasion, proliferation, and tumor growth in multiple preclinical models.

How to Prepare Stock Solution?

Concentration Volume Mass
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Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
DMSO 100 mg/mL (197.04 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Water ˂1 mg/mL
Ethanol ˂1 mg/mL
FAQ
Q: Why does a DMSO stock precipitate in media/saline?
A: It is caused by unheated aqueous media (supersaturation), local solvent shock, or incorrect mixing sequence.
How to fix it?
  • Preheat media/saline to 37°C.
  • Mix rapidly (pipette/vortex) upon addition.
  • For complex mixes, always add the aqueous phase last.
  • Re-dissolve minor precipitates with a 37°C water bath and sonication (≤30 min).
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Note: Technical data last updated: Sep 1, 2026.