ldopa

Methyldopa (MK-351), an alpha-adrenergic agonist (selective for α2-adrenergic receptors) psychoactive medicine, is served as an antihypertensive or sympatholytic.

N-acetyldopamine (NADA) is a catecholamine used by insects as a precursor for sclerotization, a process that strengthens their cuticle.

N-Acetyldopamine dimer-3 (Compound 11), a naturally occurring chemical, is present in the species Aspongopus chinensis [1].

N-Acetyldopamine dimer-1, a 2-(3',4'-dihydroxyphenyl)-1,4-benzodioxane derivative, is optically active and can be isolated from the crude agent Zentai, the cast-off shell of the cicada of Cryptotympana sp. (Cicadidae) [1].

N-Acetyldopamine dimers B is a dimer form of N-Acetyldopamine [1] [2].

N-Acetyldopamine dimers A (Compound (+)-2) can be isolated from the cast-off shell of the cicada Cryptotympana sp. and increase collagen and α-SMA expression [1].

5-S-Cysteinyldopamine is a thioether metabolite of dopamine that can induce neurological damage by causing extensive oxidative stress and protein aggregation. This is characterized by protein carbonylation, glutathione depletion, and increased expression of α-synuclein (α-Syn) and ERp57 proteins. It is applicable in research on neurodegenerative diseases such as Parkinson's disease.

L-DOPA (Levodopa) is an orally active metabolic precursor of the neurotransmitter dopamine. It can cross the blood-brain barrier and be converted into dopamine in the brain. L-DOPA exhibits anti-hyperalgesic effects and holds potential in Parkinson’s disease research, and it can also be used to induce Parkinson’s disease models.