Abstract
A simple, accurate, precise and economical method has been developed for the simultaneous estimation of pregabalin and etoricoxib in combined dosage form by using double point standardization method. Methanol is used as the solvent and chromogenic agent added was bromocresol green. Bromocresol green is only reactive with pregabalin form a green colour ion pair complex. l max of pregabalin and etoricoxib was at 618 nm and 235 nm, respectively. The method was found to be linear in the range of 6-22 µg mL-1 for pregabalin and 4.8-17.6 µg mL-1 for etoricoxib. Validation parameters was performed and method was found to be linear, accurate, precise, rugged and robust.
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