CAS No. 882257-11-6

Batch: Purity:99.91
P5091 (P005091) Chemical Structure
Chemical Structure
Check the P5091 (P005091) product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name 1-[5-(2,3-dichlorophenyl)sulfanyl-4-nitrothiophen-2-yl]ethanone
CAS Number 882257-11-6
Molecular Formula

C12H7Cl2NO3S2

Molecular Weight (MW) 348.22
SMILES CC(=O)C1=CC(=C(S1)SC2=C(C(=CC=C2)Cl)Cl)[N+](=O)[O-]
InChIKey LKZLGMAAKNEGCH-UHFFFAOYSA-N

Ordering Information

Biological Activity

P5091 is a selective inhibitor of ubiquitin-specific protease 7 (USP7; and the closely related deubiquitinase USP47. By blocking USP7 activity, P5091 promotes the degradation of MDM2, stabilizes p53, and modulates downstream p53-dependent signaling pathways. This targeted inhibition effectively triggers apoptotic cell death and suppresses cell proliferation in preclinical multiple myeloma models, overcoming resistance to conventional therapeutic agents. [1]

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 28 mg/mL (80.4 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Water Insoluble
Ethanol 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).

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