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Identification
NameEtoricoxib
Accession NumberDB01628  (DB07166)
TypeSmall Molecule
GroupsApproved, Investigational
Description

Etoricoxib is a new COX-2 selective inhibitor. Current therapeutic indications are: treatment of rheumatoid arthritis, osteoarthritis, ankylosing spondylitis, chronic low back pain, acute pain and gout. Like any other COX-2 selective inhibitor, Etoricoxib selectively inhibits isoform 2 of cyclo-oxigenase enzyme (COX-2). This reduces the generation of prostaglandins (PGs) from arachidonic acid.

Structure
Thumb
Synonyms
5-chloro-2-(6-Methylpyridin-3-yl)-3-(4-(methylsulfonyl)phenyl)pyridine
5-Chloro-3-(4-methanesulfonyl-phenyl)-6'-methyl-[2,3']bipyridinyl
5-chloro-6'-Methyl-3-(P-(methylsulfonyl)phenyl)-2,3'-bipyridine
ETORICOXIB
Etoricoxibum
L791456
External Identifiers
  • MK-663
Approved Prescription ProductsNot Available
Approved Generic Prescription ProductsNot Available
Approved Over the Counter ProductsNot Available
Unapproved/Other Products Not Available
International Brands
NameCompany
AlgixNot Available
ArcoxiaNot Available
CoxyveenSolmarc Lifesciences
EtorixNot Available
NucoxiaNot Available
TauxibNot Available
Brand mixturesNot Available
SaltsNot Available
Categories
UNIIWRX4NFY03R
CAS number202409-33-4
WeightAverage: 358.842
Monoisotopic: 358.054276131
Chemical FormulaC18H15ClN2O2S
InChI KeyInChIKey=MNJVRJDLRVPLFE-UHFFFAOYSA-N
InChI
InChI=1S/C18H15ClN2O2S/c1-12-3-4-14(10-20-12)18-17(9-15(19)11-21-18)13-5-7-16(8-6-13)24(2,22)23/h3-11H,1-2H3
IUPAC Name
5-chloro-3-(4-methanesulfonylphenyl)-2-(6-methylpyridin-3-yl)pyridine
SMILES
CC1=NC=C(C=C1)C1=C(C=C(Cl)C=N1)C1=CC=C(C=C1)S(C)(=O)=O
Taxonomy
DescriptionThis compound belongs to the class of organic compounds known as bipyridines and oligopyridines. These are organic compounds containing two pyridine rings linked to each other.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassPyridines and derivatives
Sub ClassBipyridines and oligopyridines
Direct ParentBipyridines and oligopyridines
Alternative Parents
Substituents
  • 3-phenylpyridine
  • Bipyridine
  • Methylpyridine
  • Benzenoid
  • Monocyclic benzene moiety
  • Aryl halide
  • Aryl chloride
  • Heteroaromatic compound
  • Sulfonyl
  • Sulfone
  • Azacycle
  • Hydrocarbon derivative
  • Organosulfur compound
  • Organonitrogen compound
  • Organochloride
  • Organohalogen compound
  • Aromatic heteromonocyclic compound
Molecular FrameworkAromatic heteromonocyclic compounds
External Descriptors
Pharmacology
IndicationFor the treatment of rheumatoid arthritis, osteoarthritis, ankylosing spondylitis, chronic low back pain, acute pain and gout.
PharmacodynamicsEtoricoxib is a COX-2 selective inhibitor (approximately 106 times more selective for COX-2 inhibition over COX-1). Currently it is approved in more than 60 countries worldwide but not in the US, where the Food and Drug Administration (FDA) require additional safety and efficacy data for etoricoxib before it will issue approval.
Mechanism of actionLike any other COX-2 selective inhibitor Etoricoxib selectively inhibits isoform 2 of cyclo-oxigenase enzyme (COX-2). This reduces prostaglandins (PGs) generation from arachidonic acid.
Related Articles
AbsorptionBioavailability is 100% following oral administration.
Volume of distributionNot Available
Protein binding92%
Metabolism

Hepatic, primarily via CYP3A4.

SubstrateEnzymesProduct
Etoricoxib
Etoricoxib 1'-N'-oxideDetails
Etoricoxib
6-HydroxymethyletoricoxibDetails
6-Hydroxymethyletoricoxib
6-Hydroxymethyletoricoxib 1'-N'-oxideDetails
6-Hydroxymethyletoricoxib
6-Carboxy-etoricoxibDetails
6-Hydroxymethyletoricoxib
6-Hydroxymethyletoricoxib glucuronideDetails
Route of eliminationNot Available
Half life22 hours
ClearanceNot Available
ToxicityThis reduced activity is the cause of reduced gastrointestinal toxicity, as demonstrated in several large clinical trials performed with different COXIB (see below links on NEJM and The Lancet). Some clinical trials and meta-analysis showed that treatment with COXIB lead to increased incidence of cardiovascular adverse events compared to placebo
Affected organisms
  • Humans and other mammals
Pathways
PathwayCategorySMPDB ID
Etoricoxib Action PathwayDrug actionSMP00695
SNP Mediated EffectsNot Available
SNP Mediated Adverse Drug ReactionsNot Available
ADMET
Predicted ADMET features
PropertyValueProbability
Human Intestinal Absorption+0.9776
Blood Brain Barrier+0.9399
Caco-2 permeable+0.8866
P-glycoprotein substrateNon-substrate0.845
P-glycoprotein inhibitor INon-inhibitor0.7624
P-glycoprotein inhibitor IINon-inhibitor0.9869
Renal organic cation transporterNon-inhibitor0.8267
CYP450 2C9 substrateNon-substrate0.6702
CYP450 2D6 substrateSubstrate0.8918
CYP450 3A4 substrateSubstrate0.506
CYP450 1A2 substrateInhibitor0.6415
CYP450 2C9 inhibitorInhibitor0.8528
CYP450 2D6 inhibitorNon-inhibitor0.9268
CYP450 2C19 inhibitorInhibitor0.9087
CYP450 3A4 inhibitorInhibitor0.585
CYP450 inhibitory promiscuityHigh CYP Inhibitory Promiscuity0.8848
Ames testNon AMES toxic0.7952
CarcinogenicityNon-carcinogens0.6856
BiodegradationNot ready biodegradable0.9961
Rat acute toxicity2.4100 LD50, mol/kg Not applicable
hERG inhibition (predictor I)Weak inhibitor0.9934
hERG inhibition (predictor II)Non-inhibitor0.8582
ADMET data is predicted using admetSAR, a free tool for evaluating chemical ADMET properties. (23092397 )
Pharmacoeconomics
ManufacturersNot Available
PackagersNot Available
Dosage formsNot Available
PricesNot Available
PatentsNot Available
Properties
StateSolid
Experimental PropertiesNot Available
Predicted Properties
PropertyValueSource
Water Solubility0.00328 mg/mLALOGPS
logP3.7ALOGPS
logP2.79ChemAxon
logS-5ALOGPS
pKa (Strongest Acidic)19.69ChemAxon
pKa (Strongest Basic)4.96ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count4ChemAxon
Hydrogen Donor Count0ChemAxon
Polar Surface Area59.92 Å2ChemAxon
Rotatable Bond Count3ChemAxon
Refractivity95.04 m3·mol-1ChemAxon
Polarizability36.42 Å3ChemAxon
Number of Rings3ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectra
Mass Spec (NIST)Not Available
Spectra
Spectrum TypeDescriptionSplash Key
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, PositiveNot Available
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, PositiveNot Available
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, PositiveNot Available
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, NegativeNot Available
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, NegativeNot Available
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, NegativeNot Available
References
Synthesis Reference

Andrea Castellin, Paolo Stabile, Francesco Fontana, Ottorino De Lucchi, Andrea Caporale, Stefano Tartaggia, “PROCESS FOR PREPARING 1-(6-METHYLPYRIDIN-3-YL)-2-[4-(METHYLSULFONYL)PHENYL]ETHANONE, AN INTERMEDIATE OF ETORICOXIB.” U.S. Patent US20120232281, issued September 13, 2012.

US20120232281
General ReferencesNot Available
External Links
ATC CodesM01AH05
AHFS CodesNot Available
PDB EntriesNot Available
FDA labelNot Available
MSDSNot Available
Interactions
Drug InteractionsNot Available
Food InteractionsNot Available

Targets

Kind
Protein
Organism
Human
Pharmacological action
yes
Actions
inhibitor
General Function:
Prostaglandin-endoperoxide synthase activity
Specific Function:
Converts arachidonate to prostaglandin H2 (PGH2), a committed step in prostanoid synthesis. Constitutively expressed in some tissues in physiological conditions, such as the endothelium, kidney and brain, and in pathological conditions, such as in cancer. PTGS2 is responsible for production of inflammatory prostaglandins. Up-regulation of PTGS2 is also associated with increased cell adhesion, p...
Gene Name:
PTGS2
Uniprot ID:
P35354
Molecular Weight:
68995.625 Da
References
  1. Overington JP, Al-Lazikani B, Hopkins AL: How many drug targets are there? Nat Rev Drug Discov. 2006 Dec;5(12):993-6. [PubMed:17139284 ]
  2. Imming P, Sinning C, Meyer A: Drugs, their targets and the nature and number of drug targets. Nat Rev Drug Discov. 2006 Oct;5(10):821-34. [PubMed:17016423 ]
  3. Capone ML, Tacconelli S, Di Francesco L, Sacchetti A, Sciulli MG, Patrignani P: Pharmacodynamic of cyclooxygenase inhibitors in humans. Prostaglandins Other Lipid Mediat. 2007 Jan;82(1-4):85-94. Epub 2006 Jul 3. [PubMed:17164136 ]
  4. FitzGerald GA: COX-2 in play at the AHA and the FDA. Trends Pharmacol Sci. 2007 Jul;28(7):303-7. Epub 2007 Jun 18. [PubMed:17573128 ]
  5. Yuan Y, Hunt RH: Global gastrointestinal safety profile of etoricoxib and lumiracoxib. Curr Pharm Des. 2007;13(22):2237-47. [PubMed:17691997 ]
  6. Chen X, Ji ZL, Chen YZ: TTD: Therapeutic Target Database. Nucleic Acids Res. 2002 Jan 1;30(1):412-5. [PubMed:11752352 ]

Enzymes

Kind
Protein
Organism
Human
Pharmacological action
unknown
Actions
substrateinhibitor
General Function:
Vitamin d3 25-hydroxylase 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 performs a variety of oxidation reactions (e.g. caffeine 8-oxidation, omeprazole sulphoxidation, midazolam 1'-hydroxylation and midazolam 4-hydroxylation) of structurally unrelated compounds, including steroids, fatty acids, and xenobiot...
Gene Name:
CYP3A4
Uniprot ID:
P08684
Molecular Weight:
57342.67 Da
References
  1. Takemoto JK, Reynolds JK, Remsberg CM, Vega-Villa KR, Davies NM: Clinical pharmacokinetic and pharmacodynamic profile of etoricoxib. Clin Pharmacokinet. 2008;47(11):703-20. [PubMed:18840026 ]
  2. Zhou SF, Zhou ZW, Yang LP, Cai JP: Substrates, inducers, inhibitors and structure-activity relationships of human Cytochrome P450 2C9 and implications in drug development. Curr Med Chem. 2009;16(27):3480-675. Epub 2009 Sep 1. [PubMed:19515014 ]
  3. 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 ]
Kind
Protein
Organism
Human
Pharmacological action
unknown
Actions
substrateinhibitor
General Function:
Steroid hydroxylase 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, phenyto...
Gene Name:
CYP2C9
Uniprot ID:
P11712
Molecular Weight:
55627.365 Da
References
  1. Zhou SF, Zhou ZW, Yang LP, Cai JP: Substrates, inducers, inhibitors and structure-activity relationships of human Cytochrome P450 2C9 and implications in drug development. Curr Med Chem. 2009;16(27):3480-675. Epub 2009 Sep 1. [PubMed:19515014 ]
  2. 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 ]
Kind
Protein
Organism
Human
Pharmacological action
unknown
Actions
substrateinhibitor
General Function:
Steroid hydroxylase activity
Specific Function:
Responsible for the metabolism of many drugs and environmental chemicals that it oxidizes. It is involved in the metabolism of drugs such as antiarrhythmics, adrenoceptor antagonists, and tricyclic antidepressants.
Gene Name:
CYP2D6
Uniprot ID:
P10635
Molecular Weight:
55768.94 Da
References
  1. Zhou SF, Zhou ZW, Yang LP, Cai JP: Substrates, inducers, inhibitors and structure-activity relationships of human Cytochrome P450 2C9 and implications in drug development. Curr Med Chem. 2009;16(27):3480-675. Epub 2009 Sep 1. [PubMed:19515014 ]
  2. 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 ]
Kind
Protein
Organism
Human
Pharmacological action
unknown
Actions
substrateinhibitor
General Function:
Oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen, reduced flavin or flavoprotein as one donor, and incorporation of one atom of oxygen
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. Most active in catalyzing 2-hydroxylation. Caffeine is metabolized primarily by cytochrome CYP1A2 in the liver through an initial N...
Gene Name:
CYP1A2
Uniprot ID:
P05177
Molecular Weight:
58293.76 Da
References
  1. Zhou SF, Zhou ZW, Yang LP, Cai JP: Substrates, inducers, inhibitors and structure-activity relationships of human Cytochrome P450 2C9 and implications in drug development. Curr Med Chem. 2009;16(27):3480-675. Epub 2009 Sep 1. [PubMed:19515014 ]
  2. 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 ]
Kind
Protein
Organism
Human
Pharmacological action
unknown
Actions
inhibitor
General Function:
Steroid hydroxylase activity
Specific Function:
Responsible for the metabolism of a number of therapeutic agents such as the anticonvulsant drug S-mephenytoin, omeprazole, proguanil, certain barbiturates, diazepam, propranolol, citalopram and imipramine.
Gene Name:
CYP2C19
Uniprot ID:
P33261
Molecular Weight:
55930.545 Da
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 ]
Kind
Protein
Organism
Human
Pharmacological action
unknown
Actions
inhibitor
General Function:
Steroid hydroxylase activity
Specific Function:
Metabolizes several precarcinogens, drugs, and solvents to reactive metabolites. Inactivates a number of drugs and xenobiotics and also bioactivates many xenobiotic substrates to their hepatotoxic or carcinogenic forms.
Gene Name:
CYP2E1
Uniprot ID:
P05181
Molecular Weight:
56848.42 Da
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 ]
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Drug created on August 30, 2007 09:49 / Updated on August 17, 2016 12:23