Chemical Component Summary

NameTolcapone
Identifiers(4-methylphenyl)-[3-nitro-4,5-bis(oxidanyl)phenyl]methanone
FormulaC14 H11 N O5
Molecular Weight273.24
TypeNON-POLYMER
Isomeric SMILESCc1ccc(cc1)C(=O)c2cc(O)c(O)c(c2)[N+]([O-])=O
InChIInChI=1S/C14H11NO5/c1-8-2-4-9(5-3-8)13(17)10-6-11(15(19)20)14(18)12(16)7-10/h2-7,16,18H,1H3
InChIKeyMIQPIUSUKVNLNT-UHFFFAOYSA-N

Chemical Details

Formal Charge0
Atom Count31
Chiral Atom Count0
Bond Count32
Aromatic Bond Count12

Drug Info: DrugBank

DrugBank IDDB00323 
NameTolcapone
Groups
  • approved
  • withdrawn
DescriptionTolcapone is a drug that inhibits the enzyme catechol-O-methyl transferase (COMT). It is used in the treatment of Parkinson's disease as an adjunct to levodopa/carbidopa medication. It is a yellow, odorless, non-hygroscopic, crystalline compound. Tolcapone is associated with a risk of hepatotoxicity.
Synonyms
  • Tolcapone
  • Tolcapon
  • Tolcapona
  • 4'-methyl-3,4-dihydroxy-5-nitrobenzophenone
  • Tolcaponum
Brand Names
  • Tolcapone
  • Tasmar
IndicationUsed as an adjunct to levodopa/carbidopa therapy for the symptomatic treatment of Parkinson's Disease. This drug is generally reserved for patients with parkinsonian syndrome receiving levodopa/carbidopa who are experiencing symptom fluctuations and are not responding adequately to or are not candidates for other adjunctive therapies.
Categories
  • Anti-Dyskinesia Agents
  • Anti-Parkinson Drugs
  • Benzene Derivatives
  • Benzophenones
  • Central Nervous System Agents
ATC-CodeN04BX01
CAS number134308-13-7

Drug Targets

NameTarget SequencePharmacological ActionActions
Catechol O-methyltransferaseMPEAPPLLLAAVLLGLVLLVVLLLLLRHWGWGLCLIGWNEFILQPIHNLL...unknowninhibitor
Cytochrome P450 2C9MDSLVVLVLCLSCLLLLSLWRQSSGRGKLPPGPTPLPVIGNILQIGIKDI...unknowninhibitor
Drug Info/Drug Targets: DrugBank 3.0: a comprehensive resource for 'omics' research on drugs. Knox C, Law V, Jewison T, Liu P, Ly S, Frolkis A, Pon A, Banco K, Mak C, Neveu V, Djoumbou Y, Eisner R, Guo AC, Wishart DS. Nucleic Acids Res. 2011 Jan; 39 (Database issue):D1035-41. | PMID:21059682