6-Hydroxy-L-DOPA is the 6-hydroxy derivative of the amino acid L-DOPA with neurotoxic properties. Exogenously administered 6-Hydroxy-L-DOPA is biotransformed by an amino acid decarboxylase to the highly potent and catecholamine-selective neurotoxin, 6-Hydroxydopamine.
Prenylamine lactate is a drug formerly used in the treatment of angina pectoris. Prenylamine depletes myocardial catecholamine stores and has some calcium channel blocking activity.
L-Tyrosine-13C9,15N is intended for use as an internal standard for the quantification of L-tyrosine by GC- or LC-MS. L-Tyrosine (T0493) is a non-essential amino acid.1It is produced by hydroxylation of phenylalanine by phenylalanine hydroxylase but can also be obtained from dietary sources or degradation of endogenous proteins,resulting in L-tyrosine release.1,2L-Tyrosine is a precursor in the biosynthesis of catecholamine neurotransmitters,melanins,and thyroid hormones.3Plasma,skeletal muscle,and erythrocyte levels of L-tyrosine are decreased in patients with chronic kidney disease.1