CAS No. 80370-57-6

Batch: Purity:98
Ceftiofur Chemical Structure
Chemical Structure
Check the Ceftiofur product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

CAS Number 80370-57-6
Molecular Formula

C19H17N5O7S3

Molecular Weight (MW) 523.56
SMILES CON=C(C1=CSC(=N1)N)C(=O)NC2C3N(C2=O)C(=C(CS3)CSC(=O)C4=CC=CO4)C(=O)O

Ordering Information

Biological Activity

Ceftiofur is a semisynthetic, beta-lactamase-stable, broad-spectrum cephalosporin antibiotic that acts as an effective inhibitor of bacterial cell wall synthesis by binding to penicillin-binding proteins. This targeted inhibition disrupts the cross-linking of peptidoglycan chains within the cell wall, compromising structural integrity and ultimately inducing osmotic lysis and cell death in both Gram-positive and Gram-negative bacterial strains. [1]

How to Prepare Stock Solution?

Concentration Volume Mass
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Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
DMSO 100 mg/mL (191.0 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
FAQ
Q: Why does a DMSO stock precipitate in media/saline?
A: It is caused by unheated aqueous media (supersaturation), local solvent shock, or incorrect mixing sequence.
How to fix it?
  • Preheat media/saline to 37°C.
  • Mix rapidly (pipette/vortex) upon addition.
  • For complex mixes, always add the aqueous phase last.
  • Re-dissolve minor precipitates with a 37°C water bath and sonication (≤30 min).
Note: Technical data last updated: Sep 1, 2026.