CAS No. 1172133-28-6

Batch: Purity:99.89
HO-3867 Chemical Structure
Chemical Structure
Check the HO-3867 product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name (3E,5E)-3,5-bis[(4-fluorophenyl)methylidene]-1-[(1-hydroxy-2,2,5,5-tetramethylpyrrol-3-yl)methyl]piperidin-4-one
CAS Number 1172133-28-6
Molecular Formula

C28H30F2N2O2

Molecular Weight (MW) 464.55
SMILES CC1(C=C(C(N1O)(C)C)CN2CC(=CC3=CC=C(C=C3)F)C(=O)C(=CC4=CC=C(C=C4)F)C2)C
InChIKey PWZQFTQMMAIRRM-JFMUQQRKSA-N

Ordering Information

Biological Activity

HO-3867 is a synthetic curcumin analog that acts as a selective STAT3 inhibitor. The compound selectively inhibits STAT3 phosphorylation, transcriptional activity, and DNA binding without altering the expression or activation of other STAT family proteins. Blockade of the STAT3 signaling pathway suppresses downstream survival factors, leading to cell cycle arrest and induction of apoptosis in cancer cells.

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 13 mg/mL (27.98 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Ethanol 6 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.