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Sensitive and selective method for the analysis of menthol from pharmaceutical products by RP-HPLC with refractive index detector

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Author(s): Shaikh K | Patil Sachin

Journal: Journal of Pharmacy and Bioallied Sciences
ISSN 0975-7406

Volume: 2;
Issue: 4;
Start page: 360;
Date: 2010;
Original page

Keywords: Menthol | method development | method validation | refractive index detector | reversed phase HPLC

ABSTRACT
Objective : Liquid chromatography with refractive index (RI) detection has been found to be very useful for the determination of menthol from pharmaceutical products. A simple and rapid HPLC method has been developed for this purpose compared to conventional GC methods, requiring no special sample pretreatment for the determination of menthol from pharmaceutical products. Materials and Methods : A chromatographic separation was achieved on a Inertsil ODS 3V (4.6mm×250mm, 5μm) column using water : methanol (30:70 v/v) as a mobile phase, at a flow rate of 1.0 ml/min. Results : Method was validated as per ICH guidelines for various parameters such as precision, linearity, accuracy, solution stability, robustness, limit of detection and quantification. Results were found to be within acceptable limits. Conclusion : The method has been successfully applied for the quantification of menthol from syrup formulations. The developed method can be conveniently used by the quality control department to determine assay of menthol from pharmaceutical preparations.
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