RAMADAN M, . DeterminaDetermination of levetiracetam enantiomeric purity using HPLC-fluorescence detection coupled with a pre-column o-phthalaldehyde-N-acetyl-L-cysteine derivatizationtion of levetiracetam enantiomeric purity using HPLC-fluorescence detection coupled with a pre-column o-phthalaldehyde-N-acetyl-L-cysteine derivatization. J.Res.Pharm. 2021;  25(5):  738-746. http://dx.doi.org/10.29228/jrp.64