Alanyl- glutamine,Glutamine-S
CAS NO.39537-23-0
M.F: C8H15N3O4
M.W:217.22
Appearance:White crystal or powderPurity:>99%
The detailed specifications are as below:
| Itemoftesting | InspectionStandard | Result |
| Appearance | Shouldbewhitecrystallinepowder,odorless,tasteless | Complies |
| Specificrotation | +9.5°-+11.0° | +10.37° |
| Identification | Positivereaction | Complies |
| IR | Complies | |
| HPLC | Complies | |
| pH | 5.0-6.5 | 5.68 |
| Clarityofsolution | ShouldnotbemoreopalescentthanNo.2turbiditysolution | Complies |
| Relatedsubstances | Cyclo-L-alanyl-L-glutamine:≤0.5%L-Pyroglutamyl-L-alanine:≤0.15%L-Pyroglutamicacid:≤0.05%D-alanyl-L-glumaticacid:≤0.05%L-Alanyl-L-Glutamicacid:≤0.5%Singleunknownimpurity:≤0.2%Totalunknownimpurities:≤0.5% | 0.014%NotdetectedNotdetected0.009%0.012%0.007%0.036% |
| Chloride | ≤0.02% | Complies |
| Sulfate | ≤0.02% | Complies |
| Lossondrying | ≤0.5% | 0.07% |
| Molysite | ≤0.001% | Complies |
| Residueonignition | ≤0.1% | 0.02% |
| Heavymetals | ≤10ppm | Complies |
| Ammoniumsalt | ≤0.02% | Complies |
| Organicresidues | Methanol≤0.3% | 0.019% |
| Toluene≤0.089% | Notdetected | |
| Ethylacetate≤0.5% | Notdetected | |
| Assay | NLT98.5%(ondriedbasis) | 99.78% |
| Conclusion | Conformity | |