Tyrosine and phenylalanine serve as metabolic precursors in the direction of the synthesis of mescaline. Tyrosine can either bear a decarboxylation by means of tyrosine decarboxylase to crank out tyramine and subsequently undergo an oxidation at carbon 3 by a monophenol hydroxylase or initial be hydroxylated by tyrosine hydroxylase to kind L-DOPA a