Cephalothin sodium is a first generation cephalosporin antibiotic and is freely soluble in aqueous solution (50 mg/mL).
CAS Number
58-71-9
Molecular Formula
C16H15N2NaO6S2
Molecular Weight
418.42
Mechanism of Action
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.
Storage Conditions
-20°C
Tariff Code
2941.90.5000
Spectrum
Cephalothin sodium is a broad spectrum cephalosporin targeting a wide variety of gram positive and gram negative bacteria especially those which cause respiratory and skin infections.
Form
Powder
Appearance
White or almost white crystalline powder
Source
Semi-synthetic
pH
4.5-7.0 (250 mg/mL)
Optical Rotation
+124° to +134°
Assay
≥ 850µg/mg
Loss on Drying
≤ 1.5%
Impurities
Individual Impurity: ≤1.0%
Total Impurities: ≤3.0%