the assay involves the enzymatic o-methylation of salsolinol by catechol-o-methyltransferase in presence of [ 3h ] s-adenosylmethionine , and subsequent separation by thin-layer chromatography of the resultant [ 3h ] o-methyl-salsolinol from the o-methylated derivatives of dopamine , epinephrine and norepinephrine .
C0014563
epinephrine
C0028351
norepinephrine