title: Isocratic RP-HPLC method for rutin determination in solid oral dosage forms.
abstract: A rapid and sensitive assay for quantitative determination of rutin in oral dosage forms based on isocratic reversed phase high performance liquid chromatography (RP-HPLC) was developed and validated. Using a C(18) reverse-phase analytical column, the following conditions were chosen as optimal: mobile phase methanol-water 1:1 (v/v), pH 2.8 (adjusted with phosphoric acid), flow rate=1 mL min(-1) and temperature T=40.0 degrees C. Linearity was observed in the concentration range 8-120 microg mL(-1) with a correlation coefficient of 0.99982 and the limit of detection (LOD)=2.6 microg mL(-1), and limit of quantification (LOQ)=8.0 microg mL(-1). Intra- and inter-day precision were within acceptable limits. Robustness test indicated that the mobile phase composition and pH influence mainly the separation. The proposed method allowed direct determination of rutin in pharmaceutical dosage forms in the presence of excipients, but is not suitable for preparations where compounds structurally/chemically related to rutin may be present.
authors.affiliation: Institute of Physical Chemistry, Faculty of Pharmacy, University of Belgrade, Vojvode Stepe 450, 11000 Belgrade, Serbia.
authors.forename: Vesna
authors.initials: V
authors.lastname: Kuntić
authors.forename: Natasa
authors.initials: N
authors.lastname: Pejić
authors.forename: Branka
authors.initials: B
authors.lastname: Ivković
authors.forename: Zorica
authors.initials: Z
authors.lastname: Vujić
authors.forename: Katarina
authors.initials: K
authors.lastname: Ilić
authors.forename: Svetlana
authors.initials: S
authors.lastname: Mićić
authors.forename: Vladana
authors.initials: V
authors.lastname: Vukojević
mesh_terms: D002214:Capsules; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004355:Drug Stability; D006863:Hydrogen-Ion Concentration; D016014:Linear Models; D000432:Methanol / Q000737:chemistry; D004364:Pharmaceutical Preparations / Q000737:chemistry*; D010756:Phosphoric Acids / Q000737:chemistry; D015203:Reproducibility of Results; D012431:Rutin / Q000032:analysis*; D012997:Solvents / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet / Q000379:methods; D013607:Tablets; D013696:Temperature; D013997:Time Factors; D014867:Water / Q000737:chemistry
chemical_list: D002214:Capsules; D004364:Pharmaceutical Preparations; D010756:Phosphoric Acids; D012997:Solvents; D013607:Tablets; D014867:Water; D012431:Rutin; C030242:phosphoric acid; D000432:Methanol