both the l-noradrenaline and alpha-methylnoradrenaline ( 10 ( -6 ) m ) significantly reduced ( s2/s1 = 0.27 +/- 0.05 ; 0.43 +/- 0.04 , respectively ) , whilst clonidine , xylazine and guanfacine at 10 ( -6 ) m failed to affect the stimulation evoked release of [ 3h ] noradrenaline .
C0025805
alpha-methylnoradrenaline
C0028351
noradrenaline