noradrenaline , adrenaline and dopamine , their 3-o-methyl derivatives , l-3,4-dihydroxyphenylalanine , homovanillic acid and other related compounds could be separated in less than 10 min at the 10-50-ng level on columns whose plate heights were in the range of 20-40 mum .
C0028351
noradrenaline
C0014563
adrenaline