Research
Comparative Chomatographic Study for Determination of Dalfampridine and its Derivative in Pharmaceutical Formulations
Author(s): Khadiga M. Kelani, Ahmed M. Wafaa Nassar*, Wael Talaat and Samir Morshedy
Two sensitive and precise methods were developed and validated for simultaneous estimation of dalfampridine with its oxidative degradation in pharmaceutical formulations without noticeable interference. Among the techniques adopted were chromatography [coupled TLC-densitometry and HPLC]. Method I: chromatographic separation a Spheri-5 RP C8 (220 X 4.6 X 5μm particle size) column was used in addition to the mobile phase [acetonitrile and 0.05 M KH2PO4 - (pH=5), (65: 35 v /v)], with a flow rate of (1ml.min−1) by detection (UV) at 298 nm. Method II: Densitometric separation of the drugs was performed on aluminium plates precoated with silica gel 60 F254 plates, with mobile phase chloroform, acetonitrile and methanol (volume 6:3:1) and measuring densitometry at 254 nm. HPLC calibration outline were set by the zone (0.2-6 μg mL-1), an.. Read More»
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