Sodium butyrate

Sodium butyrate: short-chain fatty acid salt.

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

Structure

Sodium butyrate: 2D structure drawn from the PubChem record (CID 5222465).

Compound data

CAS number

156-54-7

Formula

C₄H₇NaO₂

Molecular weight

110.09 g/mol

Type

Short-chain fatty acid salt

Structure and names

Identity: Sodium butyrate

IUPAC name: sodium butanoate

How Vanguard tests Sodium butyrate

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 a sodium test, assay by nonaqueous titration, alkalinity, and water content. Full testing to the USP Sodium Butyrate 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

Sodium Butyrate (CAS 156-54-7)
Tell us the salt or form the label states, so quantity is reported on the same basis.

Questions about Sodium butyrate 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 quantity and LC-MS for identity. Full testing to the USP Sodium Butyrate monograph is available and quoted.

Is sodium butyrate the same as tributyrin or calcium and magnesium butyrate?

No. Tributyrin is a triglyceride of butyric acid, and calcium or magnesium butyrate are different salts. Each carries a different amount of butyrate per gram, so the result is reported for the labeled form.

Does moisture affect sodium butyrate results?

Yes. Sodium butyrate is hygroscopic, and absorbed water dilutes the assay. Samples should be sent in a sealed container.

Sources

https://pubchem.ncbi.nlm.nih.gov/compound/5222465

Identity facts from the USP monograph header for this compound.

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