Cefsulodin sodium is a third generation cephalosporin antibiotic.
Recently, TOKU-E has found that the main cause of cefsulodin instability stems from one key impurity in 7-ACA (7-aminocephalosporanic acid- a raw material used in the synthesis of cefsulodin). In order to produce high-purity, high-stability cefsulodin, TOKU-E uses industrial HPLC to remove significant quantities of this impurity in 7-ACA and thus produce ultra-pure, ultra-stable, and ultra-potent cefsulodin.
Tian et al. used cefsulodin sodium from TOKU-E to study the mechanisms of resistance in cefsulodin-resistant Pseudomonas aeruginosa. Read more here: "CpxR Activates MexAB-OprM Efflux Pump Expression and Enhances Antibiotic Resistance in Both Laboratory and Clinical nalB-Type Isolates of Pseudomonas aeruginosa."
CAS Number
52152-93-9
Molecular Formula
C22H19N4NaO8S2 · xH2O
Molecular Weight
554.53 (Anhydrous basis)
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
2941.90.3000
Spectrum
Cefsulodin sodium has a very limited spectrum specifically targeting Pseudomonas aeruginosa. Other members of the gram positive and gram negative species show little susceptibility.
Form
Powder
Appearance
White or light yellow crystalline powder
Source
Synthetic
Impurity Profile
LD50 in mice (mg/kg): >4000 i.p.; >15000 orally (Bryskier).
Water Content (Karl Fisher)
≤5.0%
Potency (on a dry basis)
≥864 µg/mg
pH
3.3-4.8
Melting Point
175°C
Optical Rotation
+16.5° to 20.0°
Assay
(On Dried Basis): ≤90.0%