CAS No. 96946-42-8

Batch: Purity:99.57
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Cisatracurium Besylate Chemical Structure
Chemical Structure
Check the Cisatracurium Besylate product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name benzenesulfonate;5-[3-[(1R,2R)-1-[(3,4-dimethoxyphenyl)methyl]-6,7-dimethoxy-2-methyl-3,4-dihydro-1H-isoquinolin-2-ium-2-yl]propanoyloxy]pentyl 3-[(1R,2R)-1-[(3,4-dimethoxyphenyl)methyl]-6,7-dimethoxy-2-methyl-3,4-dihydro-1H-isoquinolin-2-ium-2-yl]propanoate
CAS Number 96946-42-8
Molecular Formula

C53H72N2O12.2C6H5O3S
Molecular Weight (MW) 1243.48
SMILES C[N+]1(CCC2=CC(=C(C=C2C1CC3=CC(=C(C=C3)OC)OC)OC)OC)CCC(=O)OCCCCCOC(=O)CC[N+]4(CCC5=CC(=C(C=C5C4CC6=CC(=C(C=C6)OC)OC)OC)OC)C.C1=CC=C(C=C1)S(=O)(=O)[O-].C1=CC=C(C=C1)S(=O)(=O)[O-]
InChIKey XXZSQOVSEBAPGS-DONVQRBFSA-L

Ordering Information

Biological Activity

Cisatracurium besylate is a nondepolarizing neuromuscular blocking agent that acts as a competitive antagonist of nicotinic acetylcholine receptors at the neuromuscular junction. By selectively binding to post-junctional nicotinic acetylcholine receptors, it competitively blocks acetylcholine binding and prevents end-plate depolarization. This inhibition of neuromuscular transmission suppresses action potential propagation along muscle membranes, resulting in effective blockade of skeletal muscle contraction. [1]

Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
DMSO 100 mg/mL (80.41 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Water 100 mg/mL
Ethanol 100 mg/mL
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.