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Glutamine-S

Alanyl- glutamine,Glutamine-S
CAS NO.39537-23-0
M.F: C8H15N3O4
M.W:217.22
Appearance:White crystal or powder

Purity:>99%
The detailed specifications are as below:


Item of testing 

Inspection Standard

Result 

Appearance

Should be white crystalline powder,odorless,tasteless

Complies

Specific rotation

+9.5 °- +11.0°

+10.37°

Identification

Positive reaction

Complies

 

IR

Complies

 

HPLC

Complies

pH

5.0-6.5

5.68

Clarity of solution

Should not be more opalescent than No. 2turbidity solution

Complies

Related substances 

Cyclo-L-alanyl-L-glutamine: ≤0.5%

L-Pyroglutamyl-L-alanine: ≤0.15%

L-Pyroglutamic acid : ≤0.05%

D-alanyl-L-glumatic acid : ≤0.05%

L-Alanyl-L-Glutamic acid: ≤0.5%

Single unknown impurity: ≤0.2%

Total unknown impurities: ≤0.5%

0.014%

Not detected

Not detected

0.009%

0.012%

0.007%

0.036%

Chloride 

≤0.02%

Complies

Sulfate

≤0.02%

Complies

Loss on drying

≤0.5%

0.07%

Molysite

≤0.001%

Complies

Residue on ignition 

≤0.1%

0.02%

Heavy metals 

≤10ppm

Complies

Ammonium salt

≤0.02%

Complies 

Organic residues

Methanol≤0.3%

0.019%

 

Toluene≤0.089%

Not detected

 

Ethyl acetate≤0.5%

Not detected

Assay

NLT98.5%(on dried basis )

99.78%

Conclusion 

Conformity