20 pmol ) amitriptyline , nortriptyline , imipramine , desmethylimipramine , chlorimipramine , desmethylchlorimipramine , and protriptyline can be detected with a high-pressure liquid chromatograph and a uv-monitor without prior derivatisation .
C0002600
amitriptyline
C0028420
nortriptyline