Development of an assay for the simultaneous determination of sildenfail (viagra) and its metabolite (UK-103,320) using automated sequential trace enrichment of dialysates and high-performance liquid chromatography

Sildenafil: an orally active type 5 cyclic GMP-specific phosphodiesterase inhibitor for the treatment of penile erectile dysfunction.

1996 • 1,070 citations

On-line combination of dialysis and column-switching liquid chromatography as a fully automated sample preparation technique for biological samples

1990 • 71 citations

Automated sequential trace enrichment of dialysates and robotics

1988 • 62 citations

An Automated Method for the Analysis of Urinary Free Catecholamines Using Asted and High-Pressure Liquid Chromatography

1989 • 31 citations

Automatic preparation of human serum samples for analysis of the drug enoximone and its sulphoxide metabolite using high-performance liquid chromatography

1986 • 20 citations

Preparative high-performance liquid chromatography of peptides on a new reversed-phase packing material, kromasil™ C18

1988 • 14 citations

Automated sequential trace enrichment of dialysates combined with high-performance liquid chromatography and automated heart-cutting for the determination of the nucleoside 1-(β-d-arabinofuranosyl)-5-(1-propynyl)uracil and its metabolite 5-propynyluracil in urine

1994 • 13 citations

Adsorption of serum calcium by plastic sample cups

1970 • 11 citations