2D 3D
	ID	DDInter1343
	Drug Type	small molecule
	Molecular Formula	C15H10Cl2N4O6
	Molecular Weight	413.170
	CAS Number	923287-50-7
	Description	Opicapone is a potent, reversible, and peripherally-acting third-generation inhibitor of catechol-o-methyltransferase (COMT), an enzyme involved in the breakdown of various catecholamines including dopamine.[A36938, A203048] Many patients with Parkinson’s disease treated with levodopa plus a dopa decarboxylase (DDC) inhibitor (eg carbidopa) experience motor complications over time, which calls for the management of these symptoms through the use of a dopamine agonist, a monoamine oxidase B inhibitor (selegiline, rasagiline), a _catechol-O-methyl transferase (COMT)_ inhibitor, or amantadine, or using a modified-release formulation of levodopa.[L2336] Opicapone is used for adjunct therapy to levodopa and carbidopa in adult patients with Parkinson's disease and end-of-dose motor fluctuations. Opicapone was approved for use by the European Commission in June 2016 [L2339] and the FDA in April 2020.[L13772] It is marketed under the brand name Ongentys as once-daily oral capsules. Exhibiting a long duration of action that exceeds 24 hours, opicapone can be administered once-daily [L2336] and demonstrates the lowest risk for cytotoxicity compared to other catechol-O-methyltransferase inhibitors.[A203048]
	ATC Classification	N04BX04
IUPAC Name	2,5-dichloro-3-[5-(3,4-dihydroxy-5-nitrophenyl)-1,2,4-oxadiazol-3-yl]-4,6-dimethylpyridin-1-ium-1-olate
InChI	ASOADIZOVZTJSR-UHFFFAOYSA-N
Canonical SMILES	CC1=C(C2=NOC(=N2)C2=CC(=C(O)C(O)=C2)[N+]([O-])=O)C(Cl)=[N+]([O-])C(C)=C1Cl
Useful Links	DrugBank ChEBI ChemSpider BindingDB Wikipedia ChEMBL ZINC