For research use only.

Catalog No.S2511 Synonyms: Sulphadoxine

Sulfadoxine Chemical Structure

Molecular Weight(MW): 310.33378

Sulfadoxine is an ultra-long-lasting sulfonamide with an IC50 of 249 μg/ml for P. vivax.

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Biological Activity

Description Sulfadoxine is an ultra-long-lasting sulfonamide with an IC50 of 249 μg/ml for P. vivax.



Solubility (25°C)

In vitro DMSO 62 mg/mL (199.78 mM)
Water Insoluble
Ethanol Insoluble

* 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 310.33378


CAS No. 2447-57-6
Storage powder
in solvent
Synonyms Sulphadoxine
Smiles COC1=C(OC)C(=NC=N1)N[S](=O)(=O)C2=CC=C(N)C=C2

In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)
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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).

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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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Molecular Weight Calculator

Molecular Weight Calculator

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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

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Clinical Trial Information

NCT Number Recruitment interventions Conditions Sponsor/Collaborators Start Date Phases
NCT03599596 Not yet recruiting Drug: Sulphadoxine-pyrimethamine Malaria University College Hospital Ibadan September 1 2018 Phase 1
NCT02527005 Completed Drug: Sulphadoxine-pyrimethamine|Drug: Azithromycin Malaria|Pregnant|HIV University of Ibadan September 2015 Phase 1
NCT02524444 Completed Drug: Mefloquine|Drug: Sulphadoxine-Pyrimethamine Malaria in Pregnant HIV + Patients ORIYOMI OMOTOYOSI AKINYOTU|University of Ibadan September 2015 Phase 1
NCT01328990 Completed Drug: sulfadoxine-pyrimethamine plus amodiaquine Malaria London School of Hygiene and Tropical Medicine|Cheikh Anta Diop University Senegal April 2011 Phase 1|Phase 2

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.

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Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID