1.00289
L-Glutamine
for biochemistry
Synonym(s):
L-Glutamic acid-5-amide, Gln, (S)-2,5-Diamino-5-oxopentanoic acid, L-Glutamic acid 5-amide, Levoglutamide
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About This Item
Linear Formula:
H2NCOCH2CH2CH(NH2)CO2H
CAS Number:
Molecular Weight:
146.14
NACRES:
NA.21
EC Index Number:
200-292-1
UNSPSC Code:
12352209
Beilstein/REAXYS Number:
1723797
Quality Level
form
solid
potency
7500 mg/kg LD50, oral (Rat)
pH
4.0-6.0 (20 °C, 25 g/L in H2O)
mp
185 °C (dec.) (lit.)
solubility
100 g/L
density
1.47 g/cm3 at 20 °C
bulk density
640 kg/m3
storage temp.
2-30°C
Application
- Low-protein diet supplemented with 1% L-glutamine improves growth performance, serum biochemistry, redox status, plasma amino acids, and alters fecal microbiota in weaned piglets.: This study demonstrates how L-glutamine supplementation in a low-protein diet can significantly enhance growth metrics and overall health in weaned piglets (Li et al., 2024).
- Functionalization of β-cyclodextrin metal-organic frameworks with gelatin and glutamine for drug delivery of curcumin to cancerous cells.: This article covers the development of a novel drug delivery system using glutamine-modified frameworks for targeted cancer therapy (Sadeh et al., 2024).
Biochem/physiol Actions
L-Glutamine is an essential amino acid that is a crucial component of culture media that serves as a major energy source for cells in culture. L-Glutamine is very stable as a dry powder and as a frozen solution. In liquid media or stock solutions, however, L-glutamine degrades relatively rapidly. Optimal cell performance usually requires supplementation of the media with L-glutamine prior to use.
Analysis Note
Assay (perchloric acid titration, calculated on dried substance): 99.0 - 101.0 %
Identity (IR-spectrum): passes test
Appearance: white to almost white, fine powder
Appearance of solution (25 g/l; CO₂-free water): clear and colorless
Spec. rotation (α 20/D, 100 g/l, hydrochloric acid 2 mol/l, calc. on dried substance): +31,5 to +33,0
Chloride (Cl): ≤ 200 ppm
Sulfate (SO₄): ≤ 200 ppm
Heavy metals (as Pb): ≤ 10 ppm
As (Arsenic): ≤ 5 ppm
Ca (Calcium): ≤ 10 ppm
Co (Cobalt): ≤ 5 ppm
Fe (Iron): ≤ 5 ppm
K (Potassium): ≤ 5 ppm
Mg (Magnesium): ≤ 5 ppm
Na (Sodium): ≤ 50 ppm
Zn (Zinc): ≤ 5 ppm
Ninhydrin-positive substances (LC)(any ninhydrin-positive impurity): ≤ 0.3 %
Ninhydrin-positive substances (LC) (ammonium (570 nm)): ≤ 0.1 %
Ninhydrin-positive substances (LC)(total impurities): ≤ 0.5 %
Loss on drying (105 °C; 3 h): ≤ 0.3 %
Identity (IR-spectrum): passes test
Appearance: white to almost white, fine powder
Appearance of solution (25 g/l; CO₂-free water): clear and colorless
Spec. rotation (α 20/D, 100 g/l, hydrochloric acid 2 mol/l, calc. on dried substance): +31,5 to +33,0
Chloride (Cl): ≤ 200 ppm
Sulfate (SO₄): ≤ 200 ppm
Heavy metals (as Pb): ≤ 10 ppm
As (Arsenic): ≤ 5 ppm
Ca (Calcium): ≤ 10 ppm
Co (Cobalt): ≤ 5 ppm
Fe (Iron): ≤ 5 ppm
K (Potassium): ≤ 5 ppm
Mg (Magnesium): ≤ 5 ppm
Na (Sodium): ≤ 50 ppm
Zn (Zinc): ≤ 5 ppm
Ninhydrin-positive substances (LC)(any ninhydrin-positive impurity): ≤ 0.3 %
Ninhydrin-positive substances (LC) (ammonium (570 nm)): ≤ 0.1 %
Ninhydrin-positive substances (LC)(total impurities): ≤ 0.5 %
Loss on drying (105 °C; 3 h): ≤ 0.3 %
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Storage Class
13 - Non Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
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