Quantitation of pentisomide and its metabolite by high-pressure liquid chromatography in human serum.
A rapid, inexpensive, and accurate high-performance liquid chromatographic method for the simultaneous determination of pentisomide and its major mono-N-dealkylated metabolite has been developed. After a simple and inexpensive solvent extraction procedure, the unchanged drug, its metabolite, and the internal standard are separated using a C18 reversed-phase column with a 5-microns particle size. The eluent is monitored with ultraviolet detection at 260 nm. Endogenous substances or a variety of drugs do not interfere with the assay. The mean recoveries of pentisomide and its metabolite are 92.6% and 92.2%, respectively. The limit of detection of the assay is 28 ng/mL for both drugs. Serum levels of pentisomide and its metabolite in patients on oral therapy for supraventricular tachycardia are reported.
Medical Clinic III, University of Tübingen, Germany.
C
C
Mewis
V
V
Kühlkamp
I
I
Lindena
T
T
Risler
K
K
Ress
D000889:Anti-Arrhythmia Agents / Q000097:blood* / Q000378:metabolism; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D011437:Propylamines / Q000097:blood* / Q000378:metabolism; D011725:Pyridines / Q000097:blood* / Q000378:metabolism; D012015:Reference Standards; D012016:Reference Values; D015203:Reproducibility of Results; D013056:Spectrophotometry, Ultraviolet
D000889:Anti-Arrhythmia Agents; D011437:Propylamines; D011725:Pyridines; C045930:propisomide