A VALIDATED RP- HPLC METHOD FOR THE SIMULTANEOUS ESTIMATION OF PARACETAMOL AND NAPROXEN IN TABLET FORMULATIONAbstract
The study describes a validated reverse-phase HPLC method for the simultaneous estimation of paracetamol and naproxen in bulk and in tablet formulation. The proposed RP-HPLC method utilizes Eclipse XDB C18 column (150 ×4.6 mm i.d., 5 μm), optimum mobile phase consisted of gradient run of initial ratio of water (pH-2.5 adjusted with orthophosphoric acid): acetonitrile (87:13) with the effluent flow rate of 1.0 ml/min, and UV detection wavelength 263 nm. The developed method was statistically validated for linearity, precision, robustness, ruggedness and specificity. The method was linear over the range of 5-80 μg/ml for paracetamol and 3-48μg/ml for naproxen. The mean recovery was 99.72% and 100.88% for paracetamol and naproxen respectively. The intermediate precision data obtained under different experimental setup was quite concurrent with less critical % RSD. The proposed method can be useful in the quality control of paracetamol and naproxen in bulk drug and drug products.
Karuna B. Singh*, Shekhar B. Waikar and Suhas P. Padmane
Gurunanak College of Pharmacy, Nari, Kamptee road, Nagpur 440026, Maharashtra, India
11 July, 2012
18 September, 2012
29 September, 2012
01 October, 2012