Levetiracetam USP/EP made in china CAS NO.102767-28-2

Appearance

White or almost-white powder

Identification 

IR spectrum accordance with that of CRS

Solubility 

Very soluble in water，soluble in acetonitrile，practically insoluble in hexane

Appearance of solution

Colourless and clear

Specific optical  rotation

-76°~ -82°

Water 

≤0.5%

Sulfated ash 

≤0.1%

Heavy metals 

≤0.001%

Related substance

Impurity A≤0.3%

Impurity B≤0.05%

Any unspecified impurity≤0.05%

Total unspecified impurities≤0.1%

Total impurities ≤0.4%

Impurity C

≤0.025%

Impurity D

≤0..8%

Residual solvents

Ethanol≤5000ppm

Methanol≤3000ppm

Dichloromethane≤600ppm 

Ethy acetate≤5000ppm

Acetone ≤5000ppm

Assay

98.0%~102.0%