title: Simultaneous Liquid Chromatographic Determination of Ebastine with Two Sympathomimetic Drugs Using a Monolithic Column.
abstract: Ebastine (EBS) has been assayed in its laboratory-prepared co-formulated tablets with either pseudoephedrine hydrochloride (PSU) or phenylephrine hydrochloride (PHR) using isocratic reversed-phase chromatography. Separation was conducted using a 50 mm × 4.6 mm i.d., Chromolith® SpeedROD RP-18 end-capped column at ambient temperature. A mobile phase composed of water:acetonitrile in a ratio of 25:75 having a pH of 3.2, has been utilized at 1 mL/min with UV detection at 254 nm for both EBS and PSU and 274 nm for PHR which in turn increased the sensitivity of the proposed method significantly. Symmetric well-separated peaks resulted in a short chromatographic run; <5 min. The proposed method was subjected to detailed validation procedures and proved to be highly sensitive as shown from limit of quantification values which were 4.7, 39.4 and 10.2 μg/mL for EBS, PSU and PHR, respectively. The proposed method was used to analyze EBS in its laboratory-prepared co-formulated tablets; the obtained results were comparable to those resulting from the reference method.
authors.affiliation: Department of Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt.
authors.forename: F
authors.initials: F
authors.lastname: Ibrahim
authors.affiliation: Department of Analytical Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt.
authors.forename: M E K
authors.initials: ME
authors.lastname: Wahba
mesh_terms: D002090:Butyrophenones / Q000032:analysis*; D056148:Chromatography, Reverse-Phase / Q000379:methods*; D057230:Limit of Detection; D016014:Linear Models; D010880:Piperidines / Q000032:analysis*; D015203:Reproducibility of Results; D013566:Sympathomimetics / Q000032:analysis*
chemical_list: D002090:Butyrophenones; D010880:Piperidines; D013566:Sympathomimetics; C058249:ebastine