<unk>  (norlaudanosoline) is a benzyltetrahydroisoquinoline alkaloid. It can be formed in trace amounts in the brain by a condensation reaction of dopamine and dopaldehyde (a metabolite of dopamine). It inhibits dopamine uptake within the cerebral cortex.
Tetrahydropapaveroline
Methylenedioxypyrovalerone
Coricidin
Pyridinoline
Deoxypyridinoline
N1-Methyl-lysergic acid diethylamide
5-Iodowillardiine
Hyoscyamine