“…Several methods have been reported for the determination of D-PEN in pharmaceutical dosage forms including kinetic spectrophotometry [5], electrochemical chiral sensor [6], Flow-injection [7], Circular dichroism spectroscopy [8], spectrofluorimetric [9], Fluorometric sensor [10], HPLC [11,12], carbon paste electrode [13], HPLC-FLD and CE-LIF [14], spectrophotometric [15,16], potentiometric [17], fluorescence [18][19][20], Electrochemical sensor [21], Electrocatalytic [22], Chemiluminescence [23] and Voltametric [24].…”