Ceftiofur: cephalosporin antibiotic (veterinary, third generation).
Ceftiofur testing at Vanguard Laboratory: identity, purity and quantity $250 per sample, with results in 3 to 5 business days.
Ceftiofur: 2D structure drawn from the PubChem record (CID 23671563).
104010-37-9
C19H16N5NaO7S3
545.54 g/mol
Cephalosporin antibiotic (veterinary, third generation)
Identity: Ceftiofur sodium
IUPAC name: sodium (6R,7R)-7-[[(2Z)-2-(2-amino-1,3-thiazol-4-yl)-2-methoxyiminoacetyl]amino]-3-(furan-2-carbonylsulfanylmethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
Method for the $250 identity, purity and quantity test: HPLC-UV purity and assay, LC-MS identity, against a reference standard, with results in 3 to 5 business days.
The USP monograph covers identity by infrared spectroscopy and HPLC retention time, assay by HPLC, low and high molecular weight impurities by HPLC, residual solvents, and pH, optical rotation, bacterial endotoxins and water. Full testing to the USP Ceftiofur monograph is available and quoted.
Chromatographic purity and mg per unit by the method matched to the compound, identity against a reference standard. 1 unit.
| Add-on test | Price |
|---|---|
| Identity and impurities | |
| FTIR identity | $90 |
| CHNS elemental analysis (carbon, hydrogen, nitrogen, sulfur) | $125 |
| Chiral purity (where a chiral method exists; new methods quoted) | $250 |
| Water, solvents and salt form | |
| Water content by Karl Fischer | $60 |
| Residual solvents | $150 |
| Counterions: chloride, acetate and TFA | $70 |
| Assay | |
| Assay, % w/w (with raw powder purity; $250 together) | +$50 |
| Metals and conformity | |
| Heavy metals: arsenic, cadmium, chromium, mercury and lead | $150 |
| Conformity: purity and quantity on more units from the same lot | $100 per extra unit |
| Microbiology (injectables) | |
| Endotoxin | $210 |
| Sterility or bioburden | $150 |
| Container closure integrity (CCI) | $50 |
| Screening | |
| Fentanyl screen | $50 |
10% off for 10 or more samples.
Need something else? Other tests are available on request.
Purity and quantity is $250 per sample (1 unit) and raw powder purity is $200 for 50 mg, with results in 3 to 5 business days. Send the material sealed and labeled, with the label claim and the form it contains.
No. The $250 test covers identity, purity and quantity by HPLC-UV for purity and assay, with LC-MS to confirm identity. Full testing to the USP Ceftiofur monograph is available and quoted.
Desfuroylceftiofur is the main breakdown product of ceftiofur, formed when the furoyl thioester is cleaved. It shows up as a separate peak in the HPLC purity profile.
The HPLC method is similar, but the two salts have different molecular weights and the hydrochloride is often in an oily suspension. Tell us which salt and form you have.
Ceftiofur can form dimers and polymers on storage. The USP monograph measures these with a separate HPLC procedure, which is available and quoted.
https://pubchem.ncbi.nlm.nih.gov/compound/23671563
Identity facts from the USP monograph header for this compound.
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