High-Performance Thin-Layer Chromatographic Determination of Etoricoxib and Thiocolchicoside in Combined Tablet Dosage Form
A new, simple HPTLC method for determination of etoricoxib (ETO) and thiocolchicoside (THIO) in combined tablet dosage form has been developed and validated. The pharmaceutical dosage form used in this study was Nucoxia-MR tablets. Sample solutions were prepared at concentrations of 25 and 20 g/mL for ETO and THIO, respectively. The separation was carried out on 20 10 cm Merck aluminum sheets precoated with a 250 m layer of silica gel 60F254 using ethyl acetatemethanol (8 + 2, v/v) as the mobile phase. The calibration curve was linear over a range of 50250 and 100500 ng/band for ETO and THIO, respectively. Quantitative determination was done by densitometric scanning of bands at 290 nm. LOD and LOQ values were 10.993 and 33.314 ng/band, respectively, for ETO and 25.133 and 76.161 ng/band, respectively, for THIO. The method was validated with respect to linearity, accuracy, precision, and robustness in accordance with the International Conference on Harmonization guidelines. The method has been successfully applied to the analysis of drugs in the pharmaceutical formulation.
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Document Type: Research Article
Affiliations: A.I.S.S.M.S. College of Pharmacy, Department of Pharmaceutical Analysis, Kennedy Rd, Near R.T.O., Pune411 001, Maharashtra, India.
Publication date: May 1, 2010
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- The Journal of AOAC INTERNATIONAL publishes refereed papers and reviews in the fields of chemical, biological and toxicological analytical chemistry for the purpose of showcasing the most precise, accurate and sensitive methods for analysis of foods, food additives, supplements and contaminants, cosmetics, drugs, toxins, hazardous substances, pesticides, feeds, fertilizers and the environment available at that point in time. The scope of the Journal includes unpublished original research describing new analytical methods, techniques and applications; improved approaches to sampling, both in the field and the laboratory; better methods of preparing samples for analysis; collaborative studies substantiating the performance of a given method; statistical techniques for evaluating data. The Journal will also publish other articles of general interest to its audience, e.g., technical communications; cautionary notes; comments on techniques, apparatus, and reagents.
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