spontaneous and evoked release of epinephrine was markedly reduced , when rats were pretreated with 2,3-dichloro-alpha-methylbenzylamine , an inhibitor of phenylethanolamine n-methyltransferase , the enzyme catalyzing the formation of epinephrine from norepinephrine , 80 mg/kg i.p. , before decapitation .
C0014563
epinephrine
C0028351
norepinephrine