amitriptyline ( ki 0.17 mum ) and doxepin ( ki 0.24 mum ) were found to be potent inhibitors of dopamine-sensitive adenylate cyclase , chlorimipramine ( ki 0.59 mum ) and nortriptyline ( ki 0.50 mum ) were moderate inhibitors and imipramine , desmethylimipramine , protriptyline and melitracene were weak inhibitors with ki values higher than 1 mum .
C0002600
amitriptyline
C0028420
nortriptyline