Potassium gluconate

Potassium gluconate: mineral salt (potassium).

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

Structure

Potassium gluconate: 2D structure drawn from the PubChem record (CID 16760467).

Compound data

CAS number

299-27-4

Formula

C₆H₁₁KO₇

Molecular weight

234.25 g/mol

Type

Mineral salt (potassium)

Structure and names

Identity: Potassium gluconate (anhydrous)

IUPAC name: potassium (2R,3S,4R,5R)-2,3,4,5,6-pentahydroxyhexanoate

How Vanguard tests Potassium gluconate

Method for the $250 identity, purity and quantity test: ICP-MS metal content, HPLC assay of the gluconate counter-ion, against a reference standard, with results in 3 to 5 business days.

The USP monograph covers identity by infrared spectroscopy, a flame test and TLC, assay of potassium by atomic absorption, reducing substances by titration, and loss on drying. Full testing to the USP Potassium Gluconate monograph is available and quoted.

What's reported

Metal content by ICP-MS, against the label or specification
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

Potassium Gluconate (anhydrous CAS 299-27-4; monohydrate CAS 35398-15-3)
Tell us the salt or form the label states, so quantity is reported on the same basis.

Questions about Potassium gluconate testing

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

No. The $250 test covers identity, purity and quantity by ICP-MS for potassium and HPLC for the gluconate. Full testing to the USP Potassium Gluconate monograph is available and quoted.

Is my potassium gluconate anhydrous or the monohydrate?

Both are sold, and the monohydrate has less potassium per gram. Results are converted using the labeled form.

Is potassium reported as elemental potassium?

Labels usually state elemental potassium. ICP-MS measures it directly, and the result can be converted to potassium gluconate.

Sources

https://pubchem.ncbi.nlm.nih.gov/compound/16760467

Identity facts from the USP monograph header for this compound.

Order

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