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Cefoxitin (Rephoxitin) is a broad-spectrum, orally available second-generation cephalosporins antibiotic. Cefoxitin interferes with the synthesis of bacterial cell walls. Its activity profile includes Gram-negative and Gram-positive bacteria, and is commonly used in abdominal cavity infections, pelvic infections, and certain types of gynecological infections, and is highly effective against anaerobic bacteria.

| Pack Size | Price | Availability | Quantity |
|---|---|---|---|
| 50 mg | $30 | In Stock | |
| 100 mg | $40 | In Stock | |
| 500 mg | $89 | In Stock | |
| 1 mL x 10 mM (in DMSO) | $39 | In Stock |
| Description | Cefoxitin (Rephoxitin) is a broad-spectrum, orally available second-generation cephalosporins antibiotic. Cefoxitin interferes with the synthesis of bacterial cell walls. Its activity profile includes Gram-negative and Gram-positive bacteria, and is commonly used in abdominal cavity infections, pelvic infections, and certain types of gynecological infections, and is highly effective against anaerobic bacteria. |
| Targets&IC50 | PBP4:0.14 μg/mL, PBP2a:0.72 μg/mL, PBP2b:0.19 μg/mL, PBP5:0.19 μg/mL, PBP3:1.04 μg/mL |
| In vitro | Cefoxitin demonstrates effective antimicrobial properties against Gram-positive bacteria, with minimum inhibitory concentrations (MICs) spanning from 1-6 μg/mL for various Gram-positive pathogens[1]. Furthermore, at a concentration of 1.25 µM/mL, Cefoxitin exhibits potent bactericidal activity against B. burgdorferi[2]. |
| In vivo | Cefoxitin administration at a dose of 20 mg/kg via intraperitoneal injection for 5 consecutive days demonstrates effective eradication of B. burgdorferi in the C3H/HeN mouse model.[2] |
| Synonyms | Rephoxitin, Cefoxitinum |
| Molecular Weight | 427.45 |
| Formula | C16H17N3O7S2 |
| Cas No. | 35607-66-0 |
| Smiles | [H][C@]12SCC(COC(N)=O)=C(N1C(=O)[C@]2(NC(=O)Cc1cccs1)OC)C(O)=O |
| Relative Density. | 1.63 g/cm3 |
| Storage | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice/Shipping at ambient temperature. | |||||||||||||||||||||||||||||||||||
| Solubility Information | DMSO: 90.0 mg/mL (210.6 mM), Sonication is recommended. | |||||||||||||||||||||||||||||||||||
| In Vivo Formulation | 10% DMSO+40% PEG300+5% Tween 80+45% Saline: 3.3 mg/mL (7.72 mM), Sonication is recommended. Please add the solvents sequentially, clarifying the solution as much as possible before adding the next one. Dissolve by heating and/or sonication if necessary. Working solution is recommended to be prepared and used immediately. The formulation provided above is for reference purposes only. In vivo formulations may vary and should be modified based on specific experimental conditions. | |||||||||||||||||||||||||||||||||||
Solution Preparation Table | ||||||||||||||||||||||||||||||||||||
DMSO
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