Cefmetazole Sodium

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Product Description

Cefmetazole is a semisynthetic second generation cephalosporin antibiotic derived from cephamycin. It is effective against a variety of gram-negative and gram-positive bacteria, exhibiting more efficacy against many gram-negative enteric bacteria than many first generation cephalosporins. In addition, cefmetazole has been used to research its effect on the expression and inhibition of the penicillin binding proteins, especially PBP2 and PBP4.

Cephalosporins are a type of β-lactam antibiotic consisting of a four-membered β-lactam ring bound to a six-membered dihydrothiazine ring. This two-ring system causes distortion of the β-lactam amide bond, resulting in decreased resonance stabilization and increased reactivity. β-lactams inhibit the formation of peptidoglycan cross-links within bacterial cell walls by targeting penicillin-binding proteins or PBPs. Consequently, the bacterial cell wall becomes weak and cytolysis occurs. Cephalosporins are less susceptible to β-lactamases than the penicillin β-lactam antibiotics.

Antibiotics are often used in clinical in vitro tests known as antimicrobial susceptibility tests or ASTs to determine their efficacy against certain bacterial species. They are tested against gram-negative and gram-positive bacteria using panels, discs, and MIC strips by medical microbiologists. ASTs decrease the risk of using an antibiotic against bacteria exhibiting resistance to it, and the results are used in clinical settings to determine which antibiotic(s) to prescribe for various infections.

Product Specifications
Cefmetazole Sodium
Cefmetazole Sodium Salt


Formula: C15H16N7O5S3Na

MW: 493.52 g/mol

Storage/Handling: Store at 2-8 °C. Store under inert gas.

PubChem Chemical ID: 23666711

Product Specifications

Catalog ID C-631
CAS # 56796-39-5
MW 493.52 g/mol

Technical Documentation

P Protocol
O Other
C Certificate of Analysis
S Safety Data Sheet

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