CAS No. 24868-20-0

Batch: Purity:99.33
Dantrolene sodium hemiheptahydrate Chemical Structure
Chemical Structure
Check the Dantrolene sodium hemiheptahydrate product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name disodium;bis(3-[(E)-[5-(4-nitrophenyl)furan-2-yl]methylideneamino]-2-oxo-4H-imidazol-5-olate);heptahydrate
CAS Number 24868-20-0
Molecular Formula

C14H9N4O5.7/2H2O.Na

Molecular Weight (MW) 399.29
SMILES C1C(=NC(=O)N1N=CC2=CC=C(O2)C3=CC=C(C=C3)[N+](=O)[O-])[O-].C1C(=NC(=O)N1N=CC2=CC=C(O2)C3=CC=C(C=C3)[N+](=O)[O-])[O-].O.O.O.O.O.O.O.[Na+].[Na+]
InChIKey LTWQNYPDAUSXBC-CDJGKPBYSA-L

Ordering Information

Biological Activity

Dantrolene sodium hemiheptahydrate is a skeletal muscle relaxant that acts as a ryanodine receptor (RyR) antagonist. It interferes with muscle excitation-contraction coupling by selectively inhibiting calcium release from the sarcoplasmic reticulum into the cytoplasm. This blockade attenuates muscle fiber contraction without directly impairing neuromuscular transmission, suppressing intracellular calcium overload and downstream hypermetabolic responses. [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 14 mg/mL (35.06 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).
Note: Technical data last updated: Sep 1, 2026.