title: Development and validation of a dissolution method for warfarin sodium and aspirin combination tablets.
abstract: A dissolution method for warfarin sodium-aspirin combination tablets was developed which utilizes USP Apparatus 1 (baskets) at 50 rpm with 900 ml of phosphate buffer (pH 6.8; 0.05 M) medium at 37 degrees C. A reversed-phase liquid chromatographic method was also developed for the simultaneous determination of warfarin sodium, aspirin and salicylic acid on an octadecylsilica column using acetonitrile-tetrahydrofuran-glacial acetic acid-water (23:5:5:67, v/v/v/v) as the mobile phase with UV detection at 282 nm. Validation data were obtained which demonstrate that the dissolution methodology is accurate, precise, linear and rugged for the combination tablets.
authors.affiliation: Dupont Merck Pharmaceutical Company, Wilmington, DE 19880, USA.
authors.forename: T J
authors.initials: TJ
authors.lastname: McCormick
authors.forename: A B
authors.initials: AB
authors.lastname: Gibson
authors.forename: F J
authors.initials: FJ
authors.lastname: Diana
mesh_terms: D001241:Aspirin / Q000493:pharmacokinetics*; D004338:Drug Combinations; D004355:Drug Stability; D005374:Filtration; D007267:Injections; D016014:Linear Models; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012995:Solubility; D013607:Tablets; D014859:Warfarin / Q000493:pharmacokinetics*
chemical_list: D004338:Drug Combinations; D013607:Tablets; D014859:Warfarin; D001241:Aspirin