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Product name  Levetiracetam Specific optical rotation -76° to -82° Total impurities <0.4% Heavy metals ≤ 10ppm Water ≤0.5% Sulfated ash ≤0.1% Acetone ≤ 5000ppm   Assay 98%~102% Function Levetiracetam is an antiepileptic drug, which is mainly used in the treatment of partial seizures in adults and children over 4 years old.