Form
Powder
Appearance
Off-white or light yellow powder
Source
Synthetic
Water Content (Karl Fisher)
≤2.0%
Optical Rotation
+35° - +43°
Assay
≥98.0% (as is)
Impurities
Single Impurity: ≤1.5%
Total Impurities: ≤2.0%
Cefteram pivoxil is a third generation cephalosporin antibiotic. Cefteram pivoxil contains a pivoxil group which increases lipophilicity. Cefteram pivoxil is freely soluble in ethanol, acetonitrile, methanol, and chloroform.
82547-81-7
C22H27N9O7S2
593.64
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
Like many third generation cephalosporins, cefteram is mostly active against gram negative bacteria especially those which cause meningitis and gonorrhea.
Powder
Off-white or light yellow powder
Synthetic
≤2.0%
+35° - +43°
≥98.0% (as is)
Single Impurity: ≤1.5%
Total Impurities: ≤2.0%