CAS No. 95233-18-4

Batch: Purity:99.93
Atovaquone Chemical Structure
Chemical Structure
Check the Atovaquone product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name 3-[4-(4-chlorophenyl)cyclohexyl]-4-hydroxynaphthalene-1,2-dione
CAS Number 95233-18-4
Molecular Formula

C22H19ClO3

Molecular Weight (MW) 366.84
SMILES C1CC(CCC1C2=CC=C(C=C2)Cl)C3=C(C4=CC=CC=C4C(=O)C3=O)O
InChIKey BSJMWHQBCZFXBR-UHFFFAOYSA-N

Ordering Information

Biological Activity

Atovaquone is a potent antimicrobial hydroxy-1,4-naphthoquinone derivative that targets the mitochondrial cytochrome bc1 complex (Complex III). By selectively binding to the ubiquinol oxidation site of cytochrome bc1, it inhibits electron transport through the respiratory chain and collapses the mitochondrial membrane potential. This blockade impairs pyrimidine biosynthesis and ATP generation, ultimately suppressing metabolic activity and inducing parasite mortality. [1][2]

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 11 mg/mL (29.98 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.