Molecular Weight: 643.67 g/mol

Ezatiostat Chemical Structure
Chemical Structure
Check the Ezatiostat product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

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 (155.35 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Ethanol 15 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).

Chemical Information

IUPAC Name ethyl (2S)-2-amino-5-[[(2R)-3-benzylsulfanyl-1-[[(1R)-2-ethoxy-2-oxo-1-phenylethyl]amino]-1-oxopropan-2-yl]amino]-5-oxopentanoate
CAS Number 168682-53-9
Molecular Formula

C29H36F3N3O8S
Molecular Weight (MW) 643.67
SMILES CCOC(=O)C(N)CCC(=O)NC(CSCC1=CC=CC=C1)C(=O)NC(C(=O)OCC)C2=CC=CC=C2.OC(=O)C(F)(F)F
InChIKey GWEJFLVSOGNLSS-WPFOTENUSA-N

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