CAS No. 1337532-29-2

Batch: Purity:99.98
GSK2656157 Chemical Structure
Chemical Structure
Check the GSK2656157 product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name 1-[5-(4-amino-7-methylpyrrolo[2,3-d]pyrimidin-5-yl)-4-fluoro-2,3-dihydroindol-1-yl]-2-(6-methyl-2-pyridinyl)ethanone
CAS Number 1337532-29-2
Molecular Formula

C23H21FN6O

Molecular Weight (MW) 416.45
SMILES CC1=NC(=CC=C1)CC(=O)N2CCC3=C2C=CC(=C3F)C4=CN(C5=NC=NC(=C45)N)C
InChIKey PRWSIEBRGXYXAJ-UHFFFAOYSA-N

Ordering Information

Biological Activity

GSK2656157 is an ATP-competitive, highly selective inhibitor of PERK (IC50 0.9 nM). By directly targeting PERK, it effectively blocks PERK autophosphorylation and attenuates downstream eIF2α phosphorylation within the unfolded protein response pathway. This signaling inhibition leads to decreased apoptosis, suppresses excessive autophagy, and impairs downstream phenotypes including tumor proliferation and angiogenesis in preclinical cancer models. [1]

How to Prepare Stock Solution?

Concentration Volume Mass
🧮 Molarity Calculator

Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
DMSO 10.3 mg/mL (24.73 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Ethanol 10 mg/mL
Water Insoluble
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).

Aliquotting Service

Free Aliquotting Service

Pre-aliquoted for Longevity: Solid-state aliquots offer significantly longer shelf life compared to stock solutions, ensuring maximum stability for every use.

Looking for a specific aliquot size? Reach out to your local sales representative or contact us at orders@selleckchem.com.

Note: Technical data last updated: Sep 1, 2026.