Atracurium Besylate

For research use only.

Catalog No.S1832 Synonyms: BW 33A, 51W89

Atracurium Besylate Chemical Structure

Molecular Weight(MW): 1243.48

Atracurium Besylate is a neuromuscular blocking agent with ED95 of 0.2 mg/kg.

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USD 120 In stock
USD 370 In stock
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Biological Activity

Description Atracurium Besylate is a neuromuscular blocking agent with ED95 of 0.2 mg/kg.



Solubility (25°C)

In vitro DMSO 100 mg/mL (80.41 mM)
Ethanol 100 mg/mL (80.41 mM)
Water 33 mg/mL warmed (26.53 mM)

* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.

Chemical Information

Molecular Weight 1243.48


CAS No. 64228-81-5
Storage powder
in solvent
Synonyms BW 33A, 51W89
Smiles COC1=CC=C(CC2C3=CC(=C(OC)C=C3CC[N+]2(C)CCC(=O)OCCCCCOC(=O)CC[N+]4(C)CCC5=CC(=C(OC)C=C5C4CC6=CC=C(OC)C(=C6)OC)OC)OC)C=C1OC.[O-][S](=O)(=O)C7=CC=CC=C7.[O-][S](=O)(=O)C8=CC=CC=C8

In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)
Dosage mg/kg Average weight of animals g Dosing volume per animal ul Number of animals
Step 2: Enter the in vivo formulation (Different batches have different solubility ratios, please contact Selleck to provide you with the correct ratio)
% DMSO % % Tween 80 % ddH2O

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Molarity Calculator

Molarity Calculator

Calculate the mass, volume or concentration required for a solution. The Selleck molarity calculator is based on the following equation:

Mass (mg) = Concentration (mM) × Volume (mL) × Molecular Weight (g/mol)

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*When preparing stock solutions, please always use the batch-specific molecular weight of the product found on the via label and MSDS / COA (available on product pages).

Dilution Calculator

Dilution Calculator

Calculate the dilution required to prepare a stock solution. The Selleck dilution calculator is based on the following equation:

Concentration (start) x Volume (start) = Concentration (final) x Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2 ( Input Output )

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* When preparing stock solutions always use the batch-specific molecular weight of the product found on the vial label and MSDS / COA (available online).

The Serial Dilution Calculator Equation

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  • Computed Result

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Definitions of molecular mass, molecular weight, molar mass and molar weight:

Molecular mass (molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.

Molarity Calculator

Mass Concentration Volume Molecular Weight

Clinical Trial Information

NCT Number Recruitment interventions Conditions Sponsor/Collaborators Start Date Phases
NCT03319563 Completed Drug: Local anesthetic-epinephrine|Drug: Saline Posterior Spine Surgery Mansoura University April 11 2017 Not Applicable
NCT02546947 Completed Other: Train of four monitoring Acute Respiratory Distress Syndrome Centre Chirurgical Marie Lannelongue June 2015 Not Applicable

Tech Support

Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

Handling Instructions

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AChR Signaling Pathway Map

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Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID