Abstract
A new, simple, and rapid chiral HPLC method was developed for enantioselective analysis of levetiracetam and its enantiomer [(R)-α-ethyl-2- oxo-pyrrolidine acetamide] in a pharmaceutical formulation and bulk material. Enantiomeric separation was achieved on a chiral-α1-acid glycoprotein (AGP) column (150×4.0 mm, 5 μm) using an isocratic mobile phase of phosphate buffer (pH=7) at a flow rate of 0.7 mL/min. The UV detector was set at 210 nm. Calibration curves were linear in the range of 1-100 μg/mL and 0.4-20 μg/mL for levetiracetam and the (R)-enantiomer, respectively. LOD and LOQ for the (R)-enantiomer were 0.1 and 0.4 μg/mL, respectively. The run time of analysis was less than 5.0 min.
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