Kinetic spectrophotometric determination of famotidine in commercial dosage forms.
A simple kinetic spectrophotometric method is described for the determination of famotidine. The method is based on the oxidation of the drug with alkaline potassium permanganate. The reaction is followed spectrometrically by measuring the rate of change of the absorbance at 610 nm. The initial-rate and fixed-time (at 12 min) methods are adopted for determining the drug concentration. The calibration graphs are linear in the ranges of 2-10 microg mL(-1) and 1-8 microg mL(-1) using the initial-rate and fixed-time methods, respectively. The method has been applied to the determination of famotidine in tablet formulations. The obtained results are compared statistically with those given by a reference spectrophotometric method.
Rahman
Nafisur
N
Analytical Research Division, Department of Chemistry, Aligarh Muslim University, Aligarh (U.P.) 202002, India. cht17nr@yahoo.co.in
Kashif
Mohammad
M
D000465:Algorithms; D002138:Calibration; D004304:Dosage Forms; D015738:Famotidine / Q000032:analysis*; D006635:Histamine H2 Antagonists / Q000032:analysis*; D007202:Indicators and Reagents; D007700:Kinetics; D010084:Oxidation-Reduction; D011196:Potassium Permanganate; D012972:Sodium Hydroxide; D013056:Spectrophotometry, Ultraviolet; D013607:Tablets
D004304:Dosage Forms; D006635:Histamine H2 Antagonists; D007202:Indicators and Reagents; D013607:Tablets; D011196:Potassium Permanganate; D012972:Sodium Hydroxide; D015738:Famotidine