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Clin Chem ; 35(2): 298-301, 1989 Feb.
Article in English | MEDLINE | ID: mdl-2914378

ABSTRACT

We describe a sensitive and specific liquid-chromatographic assay for pentoxifylline and three of its metabolites in human plasma and urine. Addition of hydrochloric acid to the sample before extraction, and incorporation of acetic acid in the chromatographic eluent, allow the simultaneous determination of the four compounds plus an internal standard in one chromatographic run. Unlike gas-chromatographic procedures, this method does not involve derivatization no similar analysis of serum or plasma samples has been described before now. The method has been applied successfully to routine analysis and to pharmacokinetic studies.


Subject(s)
Pentoxifylline/analysis , Theobromine/analogs & derivatives , Body Fluids/analysis , Chromatography, High Pressure Liquid/methods , Humans , Male , Pentoxifylline/pharmacokinetics
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