For research use only.

Catalog No.S5951

Cefoxitin Chemical Structure

CAS No. 35607-66-0

Cefoxitin is a beta-lactam, second-generation cephalosporin antibiotic with bactericidal activity.

Purity & Quality Control

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Biological Activity

Description Cefoxitin is a beta-lactam, second-generation cephalosporin antibiotic with bactericidal activity.



Solubility (25°C)

In vitro DMSO 85 mg/mL (198.85 mM)
Water Insoluble
Ethanol '85 mg/mL

* 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 427.45


CAS No. 35607-66-0
Storage powder
in solvent
Synonyms N/A
Smiles COC1(C2N(C1=O)C(=C(CS2)COC(=O)N)C(=O)O)NC(=O)CC3=CC=CS3

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 ()
% DMSO % % Tween 80 % ddH2O

Bio Calculators

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)

  • Mass
    Molecular Weight

*When preparing stock solutions, please always use the batch-specific molecular weight of the product found on the via label and SDS / 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 )

  • C1

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

The Serial Dilution Calculator Equation

  • Serial Dilutions

  • Computed Result

  • C1=C0/X C1: LOG(C1):
    C2=C1/X C2: LOG(C2):
    C3=C2/X C3: LOG(C3):
    C4=C3/X C4: LOG(C4):
    C5=C4/X C5: LOG(C5):
    C6=C5/X C6: LOG(C6):
    C7=C6/X C7: LOG(C7):
    C8=C7/X C8: LOG(C8):
Molecular Weight Calculator

Molecular Weight Calculator

Enter the chemical formula of a compound to calculate its molar mass and elemental composition:

Total Molecular Weight: g/mol

Tip: Chemical formula is case sensitive. C10H16N2O2 c10h16n2o2

Instructions to calculate molar mass (molecular weight) of a chemical compound:

To calculate molar mass of a chemical compound, please enter its chemical formula and click 'Calculate'.

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
NCT04775238 Recruiting Other: Silver nanoparticles|Other: Copper nanoparticles Nosocomial Infections Sohag University February 27 2021 Not Applicable
NCT03306290 Completed Drug: Serum dosage of antibiotic prophylaxis CEFOXITIN Obese|Antibiotic Prophylaxis|Bariatric Surgery Candidate Central Hospital Nancy France October 30 2017 Not Applicable
NCT03269994 Recruiting Drug: Cefoxitin|Drug: Piperacillin-tazobactam Pancreatic Cancer|Pancreas Cancer|Pancreatic Diseases Memorial Sloan Kettering Cancer Center|Indiana University|Massachusetts General Hospital|Thomas Jefferson University|Washington University School of Medicine|Advocate Illinois Masonic Medical Center|Baptist Memorial Health Care Corporation|Baylor Scott and White Health|The Cleveland Clinic|Emory University|Fox Chase Cancer Center|Gundersen Lutheran Medical Center|Hackensack Meridian Health|Hamilton Health Sciences Center|Intermountain Health Care Inc.|Jersey Shore Medical Center (Hackensack Meridian)|Johns Hopkins University|Montefiore Medical Center/Albert Einstein College of Medicine|North Shore University HealthSystem|Milton S. Hershey Medical Center|Rhode Island Hospital|Stony Brook Medicine|Sunnybrook Health Sciences Centre Canada|Temple University|The Ohio State University Wexner Medical Center|The Ottowa Hospital/University of Ottowa|University of California Davis|University of Chicago|University of Iowa|University of Texas Southwestern Medical Center|University of Utah|University of Wisconsin Madison|Providence Health & Services|Albany Medical College|Northwestern University|Universtiy of Mississippi Medical Center|Mount Sinai Hospital New York|Brody School of Medicine at East Carolina University August 28 2017 Phase 3
NCT02703857 Completed Drug: cefoxitin Antibiotic Prophylaxis Surgery Poitiers University Hospital February 2016 Phase 4
NCT01820793 Terminated Drug: Cefoxitin Acute Pyelonephritis Without Severity Symptoms Due to ESBL-producing E.Coli Assistance Publique - Hôpitaux de Paris May 2013 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

Tel: +1-832-582-8158 Ext:3

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Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID