Amino Acids & Peptides
REACH
L-glutamine
CAS Number
56-85-9
EC Number
200-292-1
FEMA Number
FEMA 3684
Abbreviation
Gln
What is L-glutamine?
L-Glutamine (CAS 56-85-9), abbreviated Gln, is a conditionally essential amino acid produced commercially for pharmaceutical, nutritional and cosmetic manufacturing.
Where is L-glutamine used?
- Clinical nutrition: incorporated into parenteral solutions
- Sports nutrition: active ingredient in recovery powders and functional beverages
- Food: flavor enhancer and fermentation nutrient
- Cosmetics: humectant and stabilizer in skin-conditioning formulations
- It functions as a nitrogen donor and metabolic substrate in biological systems.
Good to know: FEMA 3684. Pharmaceutical grades are subject to stricter purity and endotoxin controls.
Commercial specifications
- USP, BP, Ph. Eur. and FCC grades
- Bulk supply in multi-kilogram bags through to metric ton quantities depending on application grade
Other Names (Synonyms)
L-Glutaminsäure-5-amid|L-Glutaminsaeure-5-amid|L-Glutamin|L-glutamic acid γ-amide|L-Glutamic acid gamma-amide|L-Gln|L-2-aminoglutaramic acid|Glutamic acid amide|Gln
What are the physical properties of L-glutamine?
Melting Point 185.5 °C (decomp)
Boiling Point 265.74°C (rough estimate)
Density 1.00239 g/cm³ (Solid) @ Temp: 25 °C
Flash Point 185°C
Appearance White crystalline powder
Color White
Odor at 100.00 %. very mild milky custard cocoa oily
Form solution
Water Solubility Soluble in water, dimethyl sulfoxide and ethanol. Insoluble in methanol, ether, benzene, acetone, ethyl acetate and chloroform.
Refractive Index 6.8 ° (C=4, H2O)
pH 5.0-6.0 (25℃, 0.1M in H2O)
Log P -1.67
Which trade and regulatory codes apply to L-glutamine?
HS Code 29241900
Storage Class 11 - Combustible Solids
WGK (Germany) 2