CAS No. 608141-41-9

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

Chemical Information

IUPAC Name N-[2-[(1S)-1-(3-ethoxy-4-methoxyphenyl)-2-methylsulfonylethyl]-1,3-dioxoisoindol-4-yl]acetamide
CAS Number 608141-41-9
Molecular Formula

C22H24N2O7S

Molecular Weight (MW) 460.5
SMILES CCOC1=C(C=CC(=C1)C(CS(=O)(=O)C)N2C(=O)C3=C(C2=O)C(=CC=C3)NC(=O)C)OC
InChIKey IMOZEMNVLZVGJZ-QGZVFWFLSA-N

Ordering Information

Biological Activity

Apremilast is an orally active small-molecule inhibitor of PDE4 (IC50 of and TNF-α production (IC50 of. Blockade of PDE4 elevates intracellular cAMP levels, which subsequently downregulates pro-inflammatory cytokine expression through the NF-kB signaling pathway. These molecular events lead to suppressed inflammatory mediator release and attenuated immune cell recruitment in preclinical inflammatory models. [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 92 mg/mL (199.78 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.