Dopal-d5 is the deuterium labeled Dopal (HY-121252). Dopal is a metabolite and aldehyde neurotoxin of Dopamine (HY-B0451). Dopal exhibits cytotoxicity, induces alpha-synuclein oligomerization and aggregation, and is closely associated with the pathogenesis of Parkinsons disease. Dopal can be used in research related to Parkinsons disease[1].