CAS No. 65277-42-1

Batch: Purity:99.95
Ketoconazole Chemical Structure
Chemical Structure
Check the Ketoconazole product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name 1-[4-[4-[[(2S,4R)-2-(2,4-dichlorophenyl)-2-(imidazol-1-ylmethyl)-1,3-dioxolan-4-yl]methoxy]phenyl]piperazin-1-yl]ethanone
CAS Number 65277-42-1
Molecular Formula

C26H28Cl2N4O4

Molecular Weight (MW) 531.43
SMILES CC(=O)N1CCN(CC1)C2=CC=C(C=C2)OCC3COC(O3)(CN4C=CN=C4)C5=C(C=C(C=C5)Cl)Cl
InChIKey XMAYWYJOQHXEEK-ZEQKJWHPSA-N

Ordering Information

Biological Activity

Ketoconazole is a synthetic, broad-spectrum antifungal agent and an inhibitor of cytochrome P450-dependent enzymes involved in steroidogenesis and ergosterol biosynthesis. It disrupts fungal cell membrane integrity by blocking ergosterol synthesis and acts as an androgen biosynthesis inhibitor by impairing adrenal and testicular steroidogenesis. These inhibitory actions lead to downstream suppression of fungal cell growth and reduced systemic androgen levels. [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
Ethanol 7 mg/mL
DMSO 3 mg/mL (5.64 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)
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.