3d image of norfenefrine skeletal formula

norfenefrine adrenergic agent sympathomimetic drug structural isomer tyramine p-octopamine endogenous trace amine neurotransmitter brain adrenaline noradrenaline adrenergic stimulant endogenous agonist sympathetic nervous system sympathomimetic effect meta-octopamine 3-octopamine 3d dope doping synthetic csa design nps performance-enhancing ped receptor neuromodulatory nervous stress appetite memory signaling neuroscience medication side adverse