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SHORT COMMUNICATION
Year : 2006  |  Volume : 68  |  Issue : 3  |  Page : 387-389
Reverse phase HPLC method for determination of aceclofenac and paracetamol in tablet dosage form


Institute of Pharmaceutical Education and Research, Borgaon (Meghe), Wardha-442001, India

Correspondence Address:
S J Wadher
Institute of Pharmaceutical Education and Research, Borgaon (Meghe), Wardha-442001
India
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DOI: 10.4103/0250-474X.26672

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   Abstract 

A simple, precise, accurate, and validated reverse phase HPLC method has been developed for the simultaneous estimation of aceclofenac and paracetamol in tablet by reverse phase C-18 column (Intersile 4.6 mm25 cm, 10 m) using acetonitrile: 50 mM NaH 2 PO 4 in a ratio of 65:35 (pH adjusted to 3.0 with orthophosphoric acid) as a mobile phase at a flow rate of 1.5 ml/min and detection at 276 nm. The retention time for aceclofenac and paracetamol was found to be 1.58 and 4.01 min respectively, and recoveries from tablet were between 99 and 101%. The method can be used for estimation of combination of these drugs in tablets.



How to cite this article:
Momin M Y, Yeole P G, Puranik M P, Wadher S J. Reverse phase HPLC method for determination of aceclofenac and paracetamol in tablet dosage form. Indian J Pharm Sci 2006;68:387-9

How to cite this URL:
Momin M Y, Yeole P G, Puranik M P, Wadher S J. Reverse phase HPLC method for determination of aceclofenac and paracetamol in tablet dosage form. Indian J Pharm Sci [serial online] 2006 [cited 2014 Oct 1];68:387-9. Available from: http://www.ijpsonline.com/text.asp?2006/68/3/387/26672


Aceclofenac (ACF), {[2-(2', 6'-dichlorophenyl) amino] phenyl acetoxyacetic acid} is a new phenyl acetic acid derivative with potent analgesic and antiinflammatory properties and improved gastric tolerance. Paracetamol (PCM), chemically 4-hydroxy acetanilide, is a centrally and peripherally acting analgesic and antipyretic agent. Several combination dosage forms of these two drugs containing ACF (100 mg) and PCM (500 mg) are available commercially. This combination is used for pain relief and management of rheumatoid arthritis. Only a few methods[1],[2],[3],[4] have been reported for determination of ACF individually, whereas many methods[8],[9],[10] have been described in literature for determination of PCM alone or in combination with other drugs. However, there is no HPLC method reported for the simultaneous estimation of these drugs in pharmaceutical dosage forms. The present work describes a simple, precise, and accurate reverse phase HPLC method for simultaneous estimation of ACF and PCM in combined dosage form.

An isocratic HPLC system (Jasco HPLC) consisting of Jasco PU-980 pump, UV visible detector (Jasco UV 1580), a ODS C-18 RP C-18 column (Intersile 4.6 mm25 cm, 10 m), Rheondyne injection syringe and Windows-based Browin software (version 1.21) was used for analysis. Pure samples of aceclofenac and paracetamol were obtained from IPCA Laboratories Ltd., Mumbai; and Torrent Pharmaceutical Ltd., Ahmedabad. Acetonitrile and water used were of HPLC grade and obtained from E. Merck (India) Ltd., Mumbai. All other chemicals used were of AR grade. Optimized chromatographic conditions are listed in [Table - 1].

Standard stock solution (1 mg/ml) of ACF and PCM were prepared by dissolving 25 mg of drug in 25 ml of acetonitrile, separately. The solutions were suitably diluted with mobile phase to get mixed standard solution containing 3 g/ml of ACF and 15 g/ml of PCM.

Twenty tablets (Zerodol-P, IPCA Laboratories Ltd., Mumbai) each containing 100 mg of ACF and 500 mg of PCM were weighed, and powder equivalent to 25 mg of PCM was weighed accurately and taken into 25 ml volumetric flask. The drugs were extracted into acetonitrile, volume was adjusted to 25 ml, vortexed and then filtered through 0.45 membrane filter. From this solution, further dilutions were made using mobile phase to get a final concentration of 3 g/ml of ACF and 15 g/ml of PCM. Twenty microlitres of solution was injected into HPLC system to obtain chromatogram for standard drug solution (five replicates) and sample solution (five replicates). Concentrations of ACF and PCM in the formulation were calculated by comparing AUC of sample with that of standard.

Linearity and range of method was determined on standard solution by analysing 70 to 130% of test concentration, and the calibration curve was plotted using AUC versus concentration of standard solution. Accuracy of method was ascertained by recovery study by adding a known amount of standard drug (20% of test concentration) to preanalysed sample and reanalysing the samples by proposed method. Precision was studied by analysing five replicates of sample solution. Specificity was carried out by exposing the sample to different stress conditions for 24 h, such as acidic (0.1 N HCL, 1 ml, 40), basic (0.1 N NaOH, 1 ml, 40), heat (60), UV light (260 nm, 40) and humidity (75% RH, 40), before analysis by proposed method. Ruggedness[11] of method was evaluated by performing the assay with different analysts and on different days.

The chromatographic parameters were also validated by system suitability studies [Table - 2], which were carried out on freshly prepared standard stock solutions. The typical chromatogram obtained from the formulation is presented in [Figure - 1]. The retention time for PCM and ACF was found to be 1.58 and 4.01 min respectively. Peaks were well resolved with resolution of 4.83 between the two drugs and were symmetrical in shape with asymmetry factor less than 1.20. Linearity was observed in the concentration range of 1.8-4.2 g/ml for ACF and 9-21 g/ml for PCM, with the correlation coefficient of 0.9995 for ACF and 0.9999 for PCM respectively. Accuracy of the method was ascertained by recovery study (n=3). The concentration of standard spiked to the sample was 2.4-3.6 g/ml for ACF and 12-18 g/ml for PCM. Recovery data from the study are reported in [Table - 3]. The method was found to be accurate with percent recoveries between 99 and 101%. There was good repeatability of proposed method with coefficient of variance of 0.82% for ACF and 0.61% for PCM. The results of specificity studies indicated no interference from excipients, impurities, and degradation products under various stress conditions and assured that the peak response was due to a single component only. Hence, the present method is cost-effective, faster, and can be used for the routine analysis of these drugs from tablet formulations.

 
   References Top

1.Zawilla, N.H. and Mohammad, M.A., J. Pharm. Biomed. Anal., 2000, 27, 243.  Back to cited text no. 1    
2.Saharty, Y.S. and el-Khateeb, S.Z., Drug Develop. Ind. Pharm., 2002, 28, 571.  Back to cited text no. 2    
3.Hasan, N.Y. and Elkaway, M., Farmaco., 2003, 58, 91.  Back to cited text no. 3    
4.Lee, H.S., Jeong, C.K. and Choi, S.T., J. Pharm. Biomed. Anal., 2000, 23, 775.  Back to cited text no. 4    
5.Harish, L., Arora, A.R. and Gundu Rao, P., Indian Drugs, 1991, 28, 285.  Back to cited text no. 5    
6.Subramanian, G., Musmade, P. and Udupa, N., Indian J. Pharm. Sci., 2004, 66, 694.  Back to cited text no. 6    
7.Patil, D. and Raman, B., Indian Drugs , 2001, 38, 36.  Back to cited text no. 7    
8.Marin, A., Garcia, E., and Barbas, C., J. Pharm. Biomed. Anal., 2002, 29, 701.  Back to cited text no. 8    
9.Garcia, A., Ruperez, F. J. and Maza, A., J. Chromatogr., 2003, 785, 237.  Back to cited text no. 9    
10.Hinz, B., Auge, D., Rietbrock, S. and Weren, U., Biomed. Chromatogr., 2003, 17, 263.  Back to cited text no. 10    
11.ICH, Validation of Analytical Procedure: Methodology (Q2B), International Conference on Harmonization, IFPMA, Geneva, 1996.  Back to cited text no. 11    


    Figures

[Figure - 1]

    Tables

[Table - 1], [Table - 2], [Table - 3]

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