Glutamine: amino acid.
Glutamine testing at Vanguard Laboratory: identity, purity and quantity $250 per sample, with results in 3 to 5 business days.
Glutamine: 2D structure drawn from the PubChem record (CID 5961).
56-85-9
C5H10N2O3
146.14 g/mol (monoisotopic 146.07)
amino acid
IUPAC name: (2S)-2,5-diamino-5-oxopentanoic acid
Other names: L-glutamine
Identity, purity and quantity are measured by a chromatographic assay, with detection selected for the compound, against a reference standard, $250 per sample with results in 3 to 5 business days. Finished products use the same approach, with sample preparation matched to the product.
Full testing to the USP Glutamine monograph is available and quoted: identification by infrared absorption (USP <197K>), assay by titration and impurities by thin-layer chromatography.
$250
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 |
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.
Yes. Glutamine cyclizes to pyroglutamic acid in solution, especially when warm, and the two separate by HPLC.
No. The $250 test covers identity, purity and quantity against a reference standard. Full testing to the USP Glutamine monograph adds the monograph's own tests and is quoted.
Send the product name, the form of the ingredient and the label claim for a quote, or submit a sample with the sample form.
