unlabeled noradrenaline , adrenaline , and the preferential alpha 2-adrenoceptor agonists b-ht 920 , alpha-methylnoradrenaline , and clonidine concentration dependently inhibited the evoked overflow ( maximum effect of clonidine lower than that of the other compounds ) : the alpha 1-selective agonist methoxamine was ineffective .
C0028351
noradrenaline
C0025805
alpha-methylnoradrenaline