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(3,4-dihydroxy-5-nitrophenyl)-(4-methylphenyl)methanone
Tolcapone is a selective and reversible inhibitor of the enzyme catechol-O-methyltransferase (COMT), used in the treatment of Parkinson's disease. It enhances dopaminergic neurotransmission by inhibiting dopamine degradation. Due to potential hepatotoxic effects, careful monitoring of liver function is required. Tolcapone is used as an adjunct to L-Dopa therapy to alleviate motor symptoms.
Receptor Targets
Mechanism of Action
Designations
IUPAC: (3,4-dihydroxy-5-nitro-phenyl)-(p-tolyl)methanone
Legal Status
Legal status not verified by official sources. Please check current legislation independently.
Information without guarantee. Not legal advice.
Receptor Profile
Der Dopamintransporter (DAT) ist ein Natrium-abhängiger Monoamintransporter, der Dopamin aus dem synaptischen Spalt entfernt. Er ist ein zentrales Ziel von Stimulants und spielt eine Schlüsselrolle im Belohnungssystem.
Catechol-O-Methyltransferase (COMT) ist ein Enzym, das Katecholamine (Dopamin, Noradrenalin, Adrenalin) durch Methylierung inaktiviert. Der Val158Met-Polymorphismus beeinflusst die Enzymaktivität und kognitive Funktionen.
Substance Fingerprint
Pharmacological profile based on receptor binding, mechanism of action, and substance class. Limited data — interpret profile with caution.
Synapedia Evidence
Effects & Pharmacology is partially translated. Some details are still being expanded.
Tolcapone wirkt als Hemmer des Enzyms Catechol-O-Methyltransferase (COMT), was zu einer erhöhten Verfügbarkeit von Dopamin im zentralen Nervensystem führt.
Known Effects
Individual effects may vary significantly. These are pharmacologically documented effects.
Total duration 6-8 hours
Peak
2-4 hours
Onset
1-2 hours
Total duration
6-8 hours
After effects
Unknown
Start low. Individual sensitivity varies.
Dose sensitivity varies greatly between individuals. Body weight, tolerance, route of administration, combinations, and pre-existing conditions significantly affect outcomes. These figures are not dosing recommendations — they describe reported ranges, not safe amounts.
Risks
Summary
Mögliche Nebenwirkungen umfassen Leberfunktionsstörungen und gastrointestinalen Beschwerden.
Safer Use
The risks listed may be incomplete. Especially for research chemicals and rare substances, available data is limited.
Interaction details from the knowledge layer are still being translated.
Interaction data is based on known mechanisms. Unknown or rare interactions are possible and may be life-threatening.
Based on substance class, receptors, mechanisms, and effect profile.
This information is for scientific and harm-reduction purposes only. It does not constitute medical advice.
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