Abstract
The anticoagulant phenprocoumon is mainly metabolized in humans to hydroxylated metabolites and their glucuronides. A method is described for the determination of phenprocoumon, 4′-hydroxyphenprocoumon, 6-hydroxyphenprocoumon, 7-hydroxyphenprocoumon, and their glucuronide and sulphate conjugates in human urine. Reversed-phase high-performance liquid chromatography is performed after selective extraction with disposable quaternary amine columns of untreated, and β-glucuronidase- or sulphatase-treated urine samples. Urinary excretion data are presented for total, glucuronidated, sulphated and free phenprocoumon, 4′-hydroxyphenprocoumon, 6-hydroxyphenprocoumon and 7-hydroxyphenprocoumon in twelve patients after an average daily dosage of 1.3-4.2 mg phenprocoumon.
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More From: Journal of Chromatography B: Biomedical Sciences and Applications
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