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Record Information
Version5.0
StatusExpected but not Quantified
Creation Date2012-09-06 15:16:49 UTC
Update Date2022-03-07 02:51:38 UTC
HMDB IDHMDB0014468
Secondary Accession Numbers
  • HMDB14468
Metabolite Identification
Common NameTolcapone
DescriptionTolcapone, also known as tasmar, belongs to the class of organic compounds known as benzophenones. These are organic compounds containing a ketone attached to two phenyl groups. Tolcapone is a drug which is used 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. Tolcapone is an extremely weak basic (essentially neutral) compound (based on its pKa). Tolcapone is a potentially toxic compound. Benzophenone substituted on one of the phenyl rings at C-3 and C-4 by hydroxy groups and at C-5 by a nitro group, and on the other phenyl ring by a methyl group at C-4.
Structure
Data?1582753183
Synonyms
ValueSource
3,4-Dihydroxy-4'-methyl-5-nitrobenzophenoneChEBI
3,4-Dihydroxy-5-nitro-4'-methylbenzophenoneChEBI
4'-Methyl-3,4-dihydroxy-5-nitrobenzophenoneChEBI
TasmarKegg
Roche brand OF tolcaponeHMDB
3,4-Dihydroxy-5'-methyl-5-nitrobenzophenoneHMDB
3,4 Dihydroxy 5' methyl 5 nitrobenzophenoneHMDB
Chemical FormulaC14H11NO5
Average Molecular Weight273.2408
Monoisotopic Molecular Weight273.063722467
IUPAC Name5-(4-methylbenzoyl)-3-nitrobenzene-1,2-diol
Traditional Nametolcapone
CAS Registry Number134308-13-7
SMILES
CC1=CC=C(C=C1)C(=O)C1=CC(=C(O)C(O)=C1)[N+]([O-])=O
InChI Identifier
InChI=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
InChI KeyMIQPIUSUKVNLNT-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as benzophenones. These are organic compounds containing a ketone attached to two phenyl groups.
KingdomOrganic compounds
Super ClassBenzenoids
ClassBenzene and substituted derivatives
Sub ClassBenzophenones
Direct ParentBenzophenones
Alternative Parents
Substituents
  • Benzophenone
  • Diphenylmethane
  • Aryl-phenylketone
  • Nitrophenol
  • Nitrobenzene
  • Nitroaromatic compound
  • Benzoyl
  • Catechol
  • Aryl ketone
  • 1-hydroxy-4-unsubstituted benzenoid
  • 1-hydroxy-2-unsubstituted benzenoid
  • Toluene
  • Phenol
  • Ketone
  • Organic nitro compound
  • C-nitro compound
  • Organic 1,3-dipolar compound
  • Propargyl-type 1,3-dipolar organic compound
  • Allyl-type 1,3-dipolar organic compound
  • Organic oxoazanium
  • Organic nitrogen compound
  • Hydrocarbon derivative
  • Organic oxide
  • Organic oxygen compound
  • Organopnictogen compound
  • Organonitrogen compound
  • Organooxygen compound
  • Aromatic homomonocyclic compound
Molecular FrameworkAromatic homomonocyclic compounds
External Descriptors
Ontology
Physiological effectNot Available
Disposition
ProcessNot Available
Role
Physical Properties
StateSolid
Experimental Molecular Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water Solubility0.057 g/LNot Available
LogP4Not Available
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
PropertyValueSource
Water Solubility0.057 g/LALOGPS
logP2.63ALOGPS
logP3.28ChemAxon
logS-3.7ALOGPS
pKa (Strongest Acidic)5.17ChemAxon
pKa (Strongest Basic)-6.4ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count5ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area103.35 ŲChemAxon
Rotatable Bond Count3ChemAxon
Refractivity72.96 m³·mol⁻¹ChemAxon
Polarizability26.44 ųChemAxon
Number of Rings2ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DarkChem[M+H]+165.70131661259
DarkChem[M-H]-168.7231661259
DeepCCS[M+H]+158.74430932474
DeepCCS[M-H]-156.35330932474
DeepCCS[M-2H]-190.08930932474
DeepCCS[M+Na]+166.25430932474
AllCCS[M+H]+160.532859911
AllCCS[M+H-H2O]+156.632859911
AllCCS[M+NH4]+164.132859911
AllCCS[M+Na]+165.132859911
AllCCS[M-H]-158.932859911
AllCCS[M+Na-2H]-158.232859911
AllCCS[M+HCOO]-157.632859911

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
TolcaponeCC1=CC=C(C=C1)C(=O)C1=CC(=C(O)C(O)=C1)[N+]([O-])=O3616.7Standard polar33892256
TolcaponeCC1=CC=C(C=C1)C(=O)C1=CC(=C(O)C(O)=C1)[N+]([O-])=O2248.8Standard non polar33892256
TolcaponeCC1=CC=C(C=C1)C(=O)C1=CC(=C(O)C(O)=C1)[N+]([O-])=O2517.7Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
Tolcapone,1TMS,isomer #1CC1=CC=C(C(=O)C2=CC(O)=C(O[Si](C)(C)C)C([N+](=O)[O-])=C2)C=C12527.6Semi standard non polar33892256
Tolcapone,1TMS,isomer #2CC1=CC=C(C(=O)C2=CC(O[Si](C)(C)C)=C(O)C([N+](=O)[O-])=C2)C=C12551.1Semi standard non polar33892256
Tolcapone,2TMS,isomer #1CC1=CC=C(C(=O)C2=CC(O[Si](C)(C)C)=C(O[Si](C)(C)C)C([N+](=O)[O-])=C2)C=C12571.0Semi standard non polar33892256
Tolcapone,1TBDMS,isomer #1CC1=CC=C(C(=O)C2=CC(O)=C(O[Si](C)(C)C(C)(C)C)C([N+](=O)[O-])=C2)C=C12809.6Semi standard non polar33892256
Tolcapone,1TBDMS,isomer #2CC1=CC=C(C(=O)C2=CC(O[Si](C)(C)C(C)(C)C)=C(O)C([N+](=O)[O-])=C2)C=C12829.5Semi standard non polar33892256
Tolcapone,2TBDMS,isomer #1CC1=CC=C(C(=O)C2=CC(O[Si](C)(C)C(C)(C)C)=C(O[Si](C)(C)C(C)(C)C)C([N+](=O)[O-])=C2)C=C13072.6Semi standard non polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - Tolcapone GC-MS (Non-derivatized) - 70eV, Positivesplash10-0q29-3970000000-6534afd6ea55a8b8f9232017-09-01Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Tolcapone GC-MS (2 TMS) - 70eV, Positivesplash10-00xr-9748400000-548249e165d1b79700042017-10-06Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Tolcapone GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Tolcapone GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum

MS/MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Experimental LC-MS/MSLC-MS/MS Spectrum - Tolcapone LC-ESI-qTof , Positive-QTOFsplash10-00e9-0980000000-495401c19ad2c2091c1a2017-09-14HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Tolcapone , positive-QTOFsplash10-00e9-0980000000-495401c19ad2c2091c1a2017-09-14HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Tolcapone 60V, Positive-QTOFsplash10-001i-0940000000-7e03275a1aab614db33e2021-09-20HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Tolcapone 90V, Negative-QTOFsplash10-0159-0900000000-58b8b095bc956f6633202021-09-20HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Tolcapone 75V, Negative-QTOFsplash10-00lr-0910000000-97d2e08975916b96961d2021-09-20HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Tolcapone 90V, Positive-QTOFsplash10-0159-0900000000-64283697ac79a1be77ba2021-09-20HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Tolcapone 60V, Negative-QTOFsplash10-001i-0940000000-d7c768583cd479e96f712021-09-20HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Tolcapone 45V, Negative-QTOFsplash10-05c6-0390000000-f450d9a92858b34035482021-09-20HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Tolcapone 15V, Negative-QTOFsplash10-00di-0090000000-d84e09a33f805ed7a7002021-09-20HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Tolcapone 75V, Positive-QTOFsplash10-00lr-0910000000-20fd9f346adeaefc64952021-09-20HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Tolcapone 30V, Negative-QTOFsplash10-00di-0090000000-2f9b35f27dfa158fbe472021-09-20HMDB team, MONAView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Tolcapone 10V, Positive-QTOFsplash10-00di-0090000000-88737fd9fe3cbdd7038b2016-08-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Tolcapone 20V, Positive-QTOFsplash10-00di-0090000000-4b7de2c2d046ee8b3b1e2016-08-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Tolcapone 40V, Positive-QTOFsplash10-0hb9-1970000000-b9055dada9fa16c1703e2016-08-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Tolcapone 10V, Negative-QTOFsplash10-00di-0090000000-7963016dae7c1913c6152016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Tolcapone 20V, Negative-QTOFsplash10-00di-0090000000-17f517c83922302980432016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Tolcapone 40V, Negative-QTOFsplash10-00di-5190000000-9b0a168ebf7e529ad1f22016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Tolcapone 10V, Positive-QTOFsplash10-00di-0390000000-be3569c1ee47e9ff087f2021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Tolcapone 20V, Positive-QTOFsplash10-00xr-4890000000-d2acd7d77e0195bb275b2021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Tolcapone 40V, Positive-QTOFsplash10-00mo-9510000000-81222ad94f6a6eb453192021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Tolcapone 10V, Negative-QTOFsplash10-00di-0090000000-41d62228dd74750350152021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Tolcapone 20V, Negative-QTOFsplash10-00di-0090000000-02a4ae01ccd77f2e84e82021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Tolcapone 40V, Negative-QTOFsplash10-0007-8900000000-4c7370b8810f64b3021d2021-09-22Wishart LabView Spectrum
Biological Properties
Cellular Locations
  • Extracellular
  • Membrane
Biospecimen Locations
  • Blood
  • Urine
Tissue LocationsNot Available
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodExpected but not QuantifiedNot QuantifiedNot AvailableNot AvailableTaking drug identified by DrugBank entry DB00323 details
UrineExpected but not QuantifiedNot QuantifiedNot AvailableNot AvailableTaking drug identified by DrugBank entry DB00323 details
Abnormal Concentrations
Not Available
Predicted Concentrations
BiospecimenValueOriginal ageOriginal sexOriginal conditionComments
Blood0.000 uMAdult (>18 years old)BothNormalPredicted based on drug qualities
Blood0.000 umol/mmol creatinineAdult (>18 years old)BothNormalPredicted based on drug qualities
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDDB00323
Phenol Explorer Compound IDNot Available
FooDB IDNot Available
KNApSAcK IDNot Available
Chemspider ID3848682
KEGG Compound IDC07949
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkTolcapone
METLIN IDNot Available
PubChem Compound4659569
PDB IDTCW
ChEBI ID63630
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Guay DR: Tolcapone, a selective catechol-O-methyltransferase inhibitor for treatment of Parkinson's disease. Pharmacotherapy. 1999 Jan;19(1):6-20. [PubMed:9917075 ]
  2. Keating GM, Lyseng-Williamson KA: Tolcapone: a review of its use in the management of Parkinson's disease. CNS Drugs. 2005;19(2):165-84. [PubMed:15697329 ]
  3. Truong DD: Tolcapone: review of its pharmacology and use as adjunctive therapy in patients with Parkinson's disease. Clin Interv Aging. 2009;4:109-13. Epub 2009 May 14. [PubMed:19503773 ]
  4. Forsberg M, Lehtonen M, Heikkinen M, Savolainen J, Jarvinen T, Mannisto PT: Pharmacokinetics and pharmacodynamics of entacapone and tolcapone after acute and repeated administration: a comparative study in the rat. J Pharmacol Exp Ther. 2003 Feb;304(2):498-506. [PubMed:12538800 ]
  5. Kaakkola S: Clinical pharmacology, therapeutic use and potential of COMT inhibitors in Parkinson's disease. Drugs. 2000 Jun;59(6):1233-50. [PubMed:10882160 ]

Enzymes

General function:
Involved in magnesium ion binding
Specific function:
Catalyzes the O-methylation, and thereby the inactivation, of catecholamine neurotransmitters and catechol hormones. Also shortens the biological half-lives of certain neuroactive drugs, like L-DOPA, alpha-methyl DOPA and isoproterenol.
Gene Name:
COMT
Uniprot ID:
P21964
Molecular weight:
30036.77
References
  1. Chen X, Ji ZL, Chen YZ: TTD: Therapeutic Target Database. Nucleic Acids Res. 2002 Jan 1;30(1):412-5. [PubMed:11752352 ]
  2. Ries V, Selzer R, Eichhorn T, Oertel WH, Eggert K: Replacing a dopamine agonist by the COMT-inhibitor tolcapone as an adjunct to L-dopa in the treatment of Parkinson's disease: a randomized, multicenter, open-label, parallel-group study. Clin Neuropharmacol. 2010 May;33(3):142-50. doi: 10.1097/WNF.0b013e3181d99d6f. [PubMed:20502133 ]
  3. Guay DR: Tolcapone, a selective catechol-O-methyltransferase inhibitor for treatment of Parkinson's disease. Pharmacotherapy. 1999 Jan;19(1):6-20. [PubMed:9917075 ]
  4. Keating GM, Lyseng-Williamson KA: Tolcapone: a review of its use in the management of Parkinson's disease. CNS Drugs. 2005;19(2):165-84. [PubMed:15697329 ]
  5. Truong DD: Tolcapone: review of its pharmacology and use as adjunctive therapy in patients with Parkinson's disease. Clin Interv Aging. 2009;4:109-13. Epub 2009 May 14. [PubMed:19503773 ]
  6. Apud JA, Mattay V, Chen J, Kolachana BS, Callicott JH, Rasetti R, Alce G, Iudicello JE, Akbar N, Egan MF, Goldberg TE, Weinberger DR: Tolcapone improves cognition and cortical information processing in normal human subjects. Neuropsychopharmacology. 2007 May;32(5):1011-20. Epub 2006 Oct 25. [PubMed:17063156 ]
  7. Stocchi F, De Pandis MF: Utility of tolcapone in fluctuating Parkinson's disease. Clin Interv Aging. 2006;1(4):317-25. [PubMed:18046910 ]
  8. Forsberg M, Lehtonen M, Heikkinen M, Savolainen J, Jarvinen T, Mannisto PT: Pharmacokinetics and pharmacodynamics of entacapone and tolcapone after acute and repeated administration: a comparative study in the rat. J Pharmacol Exp Ther. 2003 Feb;304(2):498-506. [PubMed:12538800 ]
  9. Tai CH, Wu RM: Catechol-O-methyltransferase and Parkinson's disease. Acta Med Okayama. 2002 Feb;56(1):1-6. [PubMed:11873938 ]
  10. Kaakkola S: Clinical pharmacology, therapeutic use and potential of COMT inhibitors in Parkinson's disease. Drugs. 2000 Jun;59(6):1233-50. [PubMed:10882160 ]
  11. Ruottinen HM, Rinne UK: COMT inhibition in the treatment of Parkinson's disease. J Neurol. 1998 Nov;245(11 Suppl 3):P25-34. [PubMed:9808337 ]
General function:
Involved in monooxygenase activity
Specific function:
Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It oxidizes a variety of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics. This enzyme contributes to the wide pharmacokinetics variability of the metabolism of drugs such as S-warfarin, diclofenac, phenytoin, tolbutamide and losartan.
Gene Name:
CYP2C9
Uniprot ID:
P11712
Molecular weight:
55627.365
References
  1. Preissner S, Kroll K, Dunkel M, Senger C, Goldsobel G, Kuzman D, Guenther S, Winnenburg R, Schroeder M, Preissner R: SuperCYP: a comprehensive database on Cytochrome P450 enzymes including a tool for analysis of CYP-drug interactions. Nucleic Acids Res. 2010 Jan;38(Database issue):D237-43. doi: 10.1093/nar/gkp970. Epub 2009 Nov 24. [PubMed:19934256 ]