L-Alanyl-Glutamine

 Product specifications

• Appearance: White or almost White Crystalline Powder
• Country of Origin: China
• Assay: > 98,5%
• Solubility: Soluble in water, insoluble in ethanol, acetone or etheylether
• Specific Optical Rotation: +9,5° – 11,0°
• Chromogenic Reaction: Three ketone reagent, appear blue/purple
• HPLC: The retention time to the major peak of the sample solution corresponds to that in the chromatogram of the standard preparation.
• IR: The sample’s IR spectrum is in accordance with the reference spectrum of L-Analyl-Glutamine R.S.
• Solution: Clarity and Colour The solution is clear or not more opalescent than reference suspension 1, should not be deeper than yellow 1 standard solution.
• pH: 5.0 – 6.5
• Loss on drying: < 0,5%
• Residue on Ignition: < 0,1%

Related Substances

• Ring-(L-alanyl-L-glutamine): 0,04% – 0,2%
  L-Pyroglutamyl-L-Alanine: < 0,15%
• L-Pyroglutamic Acid: < 0,05%
• D-alanyl-L-Glutamine: < 0,05%
• D-alanyl-L-Glutamic Acid: < 0,5%
• Any other impurity: < 0,1%
• Unknown total Impurities: < 0,5%
• Chloride: < 0,02%

• Heavy Metals: <10 ppm
• Sulphate:< 0,02%
• Ammonium (NH4): <  0,08%
• Arsenic (As): < 0,0001%

Residual Solvents

• Methanol: < 3000 ppm
• Ethanol: < 5000 ppm
• Tetrahydrofuran: <   720 ppm
• Toluene: <   890 ppm
• Bacterial Endotoxins: < 0,50 EU/mg

Packaging specifications

• Packaging: Cardboard drum containing double plastic bags and one aluminium foil bag. Well-closed away from moisture.
• Net weight per drum: 25 kg
• Storage: Store in a cool & dry area, keep away from the direct light and heat.
• Shelf Life: Three years under well storage situation and stored away from direct sun light.