Cephalothin sodium

Cephalothin sodium: cephalosporin antibiotic (first generation).

Cephalothin sodium testing at Vanguard Laboratory: identity, purity and quantity $250 per sample, with results in 3 to 5 business days.

Structure

Cephalothin sodium: 2D structure drawn from the PubChem record (CID 23675321).

Compound data

CAS number

58-71-9

Formula

C₁₆H₁₅N₂NaO₆S₂

Molecular weight

418.42 g/mol

Type

Cephalosporin antibiotic (first generation)

Structure and names

Identity: Cephalothin sodium

IUPAC name: sodium (6R,7R)-3-(acetyloxymethyl)-8-oxo-7-[(2-thiophen-2-ylacetyl)amino]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate

How Vanguard tests Cephalothin sodium

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 UV spectroscopy and a sodium test, assay by HPLC, chromatographic purity by HPLC, and specific rotation, pH, loss on drying, sterility and bacterial endotoxins. Full testing to the USP Cephalothin monograph is available and quoted.

What's reported

Purity, as percent of total peak area
Quantity, against the label claim
Identity, reported as match or no match against the reference standard
With monograph testing (quoted): the monograph’s tests against its limits

Tests and prices

Purity and quantity

$250

Chromatographic purity and mg per unit by the method matched to the compound, identity against a reference standard. 1 unit.

Raw powder purity

$200

Chromatographic purity on bulk powder. 50 mg.

Add-on tests

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.

Sample amount and turnaround

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.

Salts, forms and compendial references

Cephalothin Sodium (CAS 58-71-9)
Tell us the salt or form the label states, so quantity is reported on the same basis.

Questions about Cephalothin sodium testing

Is the $250 test the same as USP monograph testing?

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 Cephalothin monograph is available and quoted.

What is the main degradation product of cephalothin?

Cephalothin loses its acetyl group to form desacetylcephalothin, which can then close to a lactone. Both appear as separate peaks in the HPLC purity profile.

Is the result reported as cephalothin or the sodium salt?

USP expresses content as cephalothin. Tell us if you need the result on the sodium salt basis as labeled.

Sources

https://pubchem.ncbi.nlm.nih.gov/compound/23675321

Identity facts from the USP monograph header for this compound.

Order

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