<unk> , or (−)-norpseudoephedrine, is a psychostimulant drug of the amphetamine family. It is one of the four optical isomers of phenylpropanolamine, the other three being cathine ((+)-norpseudoephedrine), (−)-norephedrine, and (+)-norephedrine; as well as one of the two enantiomers of<unk>  (the other being cathine). Similarly to cathine,<unk>  acts as a releasing agent of norepinephrine (EC50 = 30 nM) and to a lesser extent of dopamine (EC50 = 294 nM). Due to the 10-fold difference in its potency for inducing the release of the two neurotransmitters however,<unk>  could be called a modestly selective or preferential norepinephrine releasing agent, similarly to related compounds like ephedrine and pseudoephedrine.
L-Norpseudoephedrine
Benzoctamine
Theobromine
Para-Iodoamphetamine
Ethylnorepinephrine
Diphenylbutylpiperidine
Hyoscine butylbromide
Bethanechol