title: Stability-indicating micellar electrokinetic chromatography method for the analysis of sumatriptan succinate in pharmaceutical formulations.
abstract: A micellar electrokinetic chromatography method for the determination of sumatriptan succinate in pharmaceutical formulations was developed. The effects of several factors such as pH, surfactant and buffer concentration, applied voltage, capillary temperature, and injection time were investigated. Separation took about 5 min using phenobarbital as internal standard. The separation was carried out in reversed polarity mode at 20 °C, 26 kV and using hydrodynamic injection for 10s. Separation was achieved using a bare fused-silica capillary 50 μm×40 cm and background electrolyte of 25 mM sodium dihydrogen phosphate-adjusted with concentrated phosphoric acid to pH 2.2, containing 125 mM sodium dodecyl sulfate and detection was at 226 nm. The method was validated with respect to linearity, limits of detection and quantification, accuracy, precision and selectivity. The calibration curve was linear over the range of 100-2000 μg mL(-1). The relative standard deviations of intra-day and inter-day precision for migration time, peak area, corrected peak area, ratio of corrected peak area and ratio of peak area were less than 0.68, 3.48, 3.28, 2.97 and 2.83% and 2.01, 5.50, 4.46, 4.92 and 4.07%, respectively. The proposed method was successfully applied to the determinations of the analyte in tablet. Forced degradation studies were conducted by introducing a sample of sumatriptan succinate standard solution to different forced degradation conditions using neutral (water), basic (0.1 M NaOH), acidic (0.1 M HCl), oxidative (10% H(2)O(2)) and photolytic (exposure to UV light at 254 nm for 2 h). It is concluded that the stability-indicating method for sumatriptan succinate can be used for the analysis of the drug in various samples.
authors.affiliation: Unit Kanser MAKNA-USM, Advanced Medical & Dental Institute, Suite 121 & 141, EUREKA Complex, Universiti Sains Malaysia, 11800 Penang, Malaysia.
authors.forename: Khaldun M
authors.initials: KM
authors.lastname: Al Azzam
authors.forename: Bahruddin
authors.initials: B
authors.lastname: Saad
authors.forename: Chai Yuan
authors.initials: CY
authors.lastname: Tat
authors.forename: Ishak
authors.initials: I
authors.lastname: Mat
authors.forename: Hassan Y
authors.initials: HY
authors.lastname: Aboul-Enein
mesh_terms: D020374:Chromatography, Micellar Electrokinetic Capillary / Q000379:methods*; D057230:Limit of Detection; D004364:Pharmaceutical Preparations / Q000737:chemistry*; D012015:Reference Standards; D015203:Reproducibility of Results; D058825:Serotonin 5-HT1 Receptor Agonists / Q000032:analysis*; D018170:Sumatriptan / Q000032:analysis*; D013501:Surface-Active Agents / Q000737:chemistry; D013607:Tablets
chemical_list: D004364:Pharmaceutical Preparations; D058825:Serotonin 5-HT1 Receptor Agonists; D013501:Surface-Active Agents; D013607:Tablets; D018170:Sumatriptan