reserpine in vitro ( 10 ( -5 ) m ) caused a profound inhibition ( > 85 % ) of the formation of both ( 14 ) c-catecholamine ( ( 14 ) c-ca ) and ( 14 ) c-dihydroxyphenylalanine ( ( 14 ) c-dopa ) ( in the presence of the amino acid decarboxylase inhibitor brocresine ) from ( 14 ) c-tyrosine in guinea-pig vas deferens .
C0007412
catecholamine
C0013023
dopa