CAS No. 2398-96-1

Batch: Purity:99.99
Tolnaftate Chemical Structure
Chemical Structure
Check the Tolnaftate product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name O-naphthalen-2-yl N-methyl-N-(3-methylphenyl)carbamothioate
CAS Number 2398-96-1
Molecular Formula

C19H17NOS

Molecular Weight (MW) 307.41
SMILES CC1=CC(=CC=C1)N(C)C(=S)OC2=CC3=CC=CC=C3C=C2
InChIKey FUSNMLFNXJSCDI-UHFFFAOYSA-N

Biological Activity

Tolnaftate is a synthetic thiocarbamate antifungal agent that acts as a selective inhibitor of fungal squalene epoxidase. By blocking squalene epoxidase, it interrupts ergosterol biosynthesis, leading to the accumulation of intracellular squalene and severe depletion of membrane ergosterol. This disruption impairs fungal cell membrane integrity and function, ultimately inhibiting fungal growth and cellular viability. [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 62 mg/mL (201.68 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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Reference

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