to identify the electrochemical peaks , inhibitors of monoamine metabolism were administrated . alpha-methylparatyrosine ( tyrosine hydroxylase inhibitor ) , fusaric acid ( dopamine-beta-hydroxylase inhibitor ) , pargyline ( monoamine oxidase inhibitor ) and ly 134046 ( phenylethanolamine-n-methyltransferase inhibitor ) showed that the first peak measured in the rvlm is likely to have multiple components including epinephrine , norepinephrine and 3,4-dihydroxyphenylacetic acid .
C0014563
epinephrine
C0028351
norepinephrine