2D Structure
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2D chemical structural formula diagram.

3D Structure
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This 3D model represents a theoretically simulated conformation and is for reference only.

Check the Upamostat (WX-671) product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name ethyl 4-[(2S)-3-[3-[(E)-(hydroxyhydrazinylidene)methyl]phenyl]-2-[[2,4,6-tri(propan-2-yl)phenyl]sulfonylamino]propanoyl]piperazine-1-carboxylate
CAS Number 590368-25-5
Molecular Formula

C32H47N5O6S
Molecular Weight (MW) 629.81
SMILES CCOC(=O)N1CCN(CC1)C(=O)C(CC2=CC(=CC=C2)C(=N)NO)N[S](=O)(=O)C3=C(C=C(C=C3C(C)C)C(C)C)C(C)C
InChIKey CYCFEEXTLQGJEL-XEOXDSMQSA-N

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 100 mg/mL (158.77 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Ethanol 100 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).

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