title: Advantages of pentafluorophenylpropyl stationary phase over conventional C18 stationary phase--application to analysis of triamcinolone acetonide.
abstract: A pentafluorophenylpropyl (PFPP) stationary phase was for the first time tested for the simultaneous determination of triamcinolone acetonide, its degradation product triamcinolone and two preservatives, methylparaben, and propylparaben. A new simple isocratic reversed phase HPLC method with UV detection, using estradiol hemihydrate as an internal standard, has been developed and validated. Chromatography was performed on a Discovery HS F5 column (150 mm x 4.6 mm, 5 microm) using a binary mobile phase composed of acetonitrile and water 45:55 (v:v). The flow-rate was 0.6 mL/min, the column temperature 25 degrees C and the UV detection was accomplished at 240 nm. The chromatography results using PFPP stationary phase were compared with those obtained using conventional C18 columns.
authors.affiliation: Department of Analytical Chemistry, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic.
authors.forename: Lucie
authors.initials: L
authors.lastname: Havlíková
authors.forename: Ludmila
authors.initials: L
authors.lastname: Matysová
authors.forename: Renata
authors.initials: R
authors.lastname: Hájková
authors.forename: Dalibor
authors.initials: D
authors.lastname: Satínský
authors.forename: Petr
authors.initials: P
authors.lastname: Solich
mesh_terms: D000097:Acetonitriles; D002021:Buffers; D002851:Chromatography, High Pressure Liquid / Q000379:methods* / Q000592:standards; D007202:Indicators and Reagents; D014222:Triamcinolone Acetonide / Q000032:analysis*; D014867:Water
chemical_list: D000097:Acetonitriles; D002021:Buffers; D007202:Indicators and Reagents; D014867:Water; D014222:Triamcinolone Acetonide; C032159:acetonitrile