DEVELOPMENT OF A NEW CHROMATOGRAPHIC METHOD FOR ESTIMATION OF RIZATRIPTAN IN BULK AND PHARMACEUTICAL DOSAGE FORM

A rapid and precise reverse phase high performance liquid chromatographic method has been developed for the validated of Rizatriptan, in its pure form as well as in tablet dosage form. Chromatography was carried out on a Xterra RP 18 (4.6 x 250mm, 5µm) column using a mixture of Methanol: Water (75:25% v/v) as the mobile phase at a flow rate of 1.0ml/min, the detection was carried out at 262 nm. The retention time of the Rizatriptan was 5.481 min. The method produce linear responses in the concentration range of 15-75ppm of Rizatriptan. The method precision for the determination of assay was below 2.0%RSD. The method is useful in the quality control of bulk and pharmaceutical formulations. Keywords: Rizatriptan, RP-HPLC, Validation, Linearty, ICH guideline