<unk>  (INN) or meta-octopamine (3-octopamine), also known as 3,β-dihydroxyphenethylamine, is an adrenergic agent used as a sympathomimetic drug which is marketed in Europe, Japan, and Mexico. Along with its structural isomer p-octopamine and the tyramines,<unk>  is a naturally occurring, endogenous trace amine and plays a role as a minor neurotransmitter in the brain.
Some brand names for it include Coritat, Energona, Hypolind, and Novadral.
Norfenefrine
Isoxsuprine
Minaprine
Etilefrine
Iotrolan
Allylestrenol
Methylergonovine 
Almitrine