when lysates of erythrocytes of 11 species , including man , were incubated at ph 7.8 with l-3-methoxy-4-hydroxy [ u-14c ] phenylalanine or with [ 7-3h ] normetanephrine , these were demethylated and formed 3,4-dihydroxy [ 14c ] phenylalanine or [ 3h ] norepinephrine .
C0028385
normetanephrine
C0028351
norepinephrine