Form
Powder
Appearance
White or Off-White Powder
Water Content (Karl Fisher)
3.0-4.5%
Assay
860-1003 µg/mg (on dried basis)
Residue On Ignition
≤0.5%
Cefmetazole is a broad spectrum second generation cephalosporin antibiotic. TOKU-E offers two forms of cefmetazole: cefmetazole, free acid (C122), and cefmetazole sodium (C052). Cefmetazole is freely soluble in water 92 mg/mL.
56796-39-5
C15H16N7O5S3Na
493.52
Like β-lactams, cephalosporins interfere with PBP (penicillin binding protein) activity involved in the final phase of peptidoglycan synthesis. PBP’s are enzymes which catalyze a pentaglycine crosslink between alanine and lysine residues providing additional strength to the cell wall. Without a pentaglycine crosslink, the integrity of the cell wall is severely compromised and ultimately leads to cell lysis and death. Resistance to cephalosporins is commonly due to cells containing plasmid encoded β-lactamases.
-20°C
2941.90.3000
Cefmetazole is broad spectrum antibiotic targeting a wide range of Gram-positive and Gram-negative bacteria. Cefmetazole is more potent against many Gram-negative enteric flora and pathogens than other first generation cephalosporins.
Powder
White or Off-White Powder
3.0-4.5%
860-1003 µg/mg (on dried basis)
≤0.5%