L-Threonine 72-19-5

Categories: Active Pharmaceutical Ingredients>Biochemical Ingredients>Amino Acids and Derivatives
Expected Quantity: 1000
Valid To: 2018-07-11
Delivery To: China Mainland
Date Posted: 2018-04-09
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L-ThreonineCAS NO72-19-5Chemical NameL-ThreonineMolecular Structure
Molecular FormulaC4H9NO3Molecular Weight119.12CharacteristicsWhite crystalling powderPacking25㎏/drum,25㎏/cartonQuality  StandardAJI92/USP28/EP5/FCCIV

Specification

 

Specific rotation[a]D20°          

-27.6°~-29.0°          

State of solution

Clear and colorless

(Tranamittance)

≥98.0%

Chloride(Cl)

≤0.02%

Ammonium(NH4)                    

≤0.02%               

Sulfate(SO4)                            

≤0.020%       

Iron(Fe)                             

≤10PPm           

Heavy metals(Pb)                  

≤10PPm              

Arsenic(As2O3)                     

≤1PPm               

Other amio acids

Chromatographically not detecatable

Loss on drying                      

≤0.10%

Residue on ignition (Sulfated)                           

≤0.10%

Assay                                  

99.0~100.5%             

PH

5.2~6.2   

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