Abstract
A densitometric thin-layer chromatographic method has been established for the analysis of celecoxib, etoricoxib, and valdecoxib in pharmaceutical formulations. TLC was performed on silica gel 60 F 254 plates with chloroform-acetone-toluene 12:5:2 ( v/v ) as mobile phase. UV detection was performed by densitometric scanning at 254 and 290 nm. The method was validated by determination of linearity, precision, limits of detection, and determination (from 0.0017 to 0.0848 μg per band) and accuracy (from 99.16 to 100.48%).
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