Determination of imipramine, desipramine and their hydroxy metabolites by reversed-phase chromatography with ultraviolet and coulometric detection.
A reversed-phase high-performance liquid chromatographic method is described which analyzes imipramine, desipramine and their corresponding 2-hydroxy metabolites with sequential ultraviolet and coulometric detection from a single common extraction step, so that a wider dynamic range of plasma concentrations can be measured requiring smaller sample volumes. Applicability is broader including single-dose pharmacokinetic studies as well as steady-state concentrations. The extraction procedure gives excellent recoveries for imipramine, desipramine and their metabolites (mean +/- S.D.): ultraviolet detection, imipramine 99.5 +/- 0.68%, desipramine 100 +/- 0.0%, 2-hydroxyimipramine 97.8 +/- 3.5% and 2-hydroxydesipramine 93.1 +/- 4.22%; coulometric detection, imipramine 97.5 +/- 1.9%, desipramine 98.3 +/- 1.2%, 2-hydroxyimipramine 90.3 +/- 4.0% and 2-hydroxydesipramine 86.6 +/- 7.5%.
Foglia
J P
JP
Western Psychiatric Institute and Clinic, Clinical Pharmacology Program, Pittsburgh, PA 15213.
Sorisio
D
D
Perel
J M
JM
D002851:Chromatography, High Pressure Liquid; D003891:Desipramine / Q000031:analogs & derivatives* / Q000097:blood*; D004563:Electrochemistry; D006801:Humans; D007099:Imipramine / Q000031:analogs & derivatives* / Q000097:blood*; D015203:Reproducibility of Results; D013056:Spectrophotometry, Ultraviolet
C033803:2-hydroxyimipramine; D007099:Imipramine; D003891:Desipramine; C028653:2-hydroxydesipramine