Zomepirac

Identification

Generic Name
Zomepirac
DrugBank Accession Number
DB04828
Background

Zomepirac, formerly marketed as Zomax tablets, was associated with fatal and near-fatal anaphylactoid reactions. The manufacturer voluntarily removed Zomax tablets from the Canadian, US, and UK markets in March 1983.

Type
Small Molecule
Groups
Withdrawn
Structure
Weight
Average: 291.73
Monoisotopic: 291.066221026
Chemical Formula
C15H14ClNO3
Synonyms
  • 5-(4-Chlorobenzoyl)-1,4-dimethyl-1H-pyrrole-2-acetic acid
  • Zomepirac
  • Zomepiracum

Pharmacology

Indication

Zomepirac was indicated for the management of mild to severe pain.

Reduce drug development failure rates
Build, train, & validate machine-learning models
with evidence-based and structured datasets.
See how
Build, train, & validate predictive machine-learning models with structured datasets.
See how
Contraindications & Blackbox Warnings
Prevent Adverse Drug Events Today
Tap into our Clinical API for life-saving information on contraindications & blackbox warnings, population restrictions, harmful risks, & more.
Learn more
Avoid life-threatening adverse drug events with our Clinical API
Learn more
Pharmacodynamics

Not Available

Mechanism of action
TargetActionsOrganism
AProstaglandin G/H synthase 1
modulator
Humans
AProstaglandin G/H synthase 2
modulator
Humans
UProstaglandin D2 receptor 2Not AvailableHumans
Absorption

Not Available

Volume of distribution

Not Available

Protein binding

Not Available

Metabolism
Not Available
Route of elimination

Not Available

Half-life

Not Available

Clearance

Not Available

Adverse Effects
Improve decision support & research outcomes
With structured adverse effects data, including: blackbox warnings, adverse reactions, warning & precautions, & incidence rates. View sample adverse effects data in our new Data Library!
See the data
Improve decision support & research outcomes with our structured adverse effects data.
See a data sample
Toxicity

Not Available

Pathways
Not Available
Pharmacogenomic Effects/ADRs
Not Available

Interactions

Drug Interactions
This information should not be interpreted without the help of a healthcare provider. If you believe you are experiencing an interaction, contact a healthcare provider immediately. The absence of an interaction does not necessarily mean no interactions exist.
DrugInteraction
AbacavirZomepirac may decrease the excretion rate of Abacavir which could result in a higher serum level.
AbametapirThe serum concentration of Zomepirac can be increased when it is combined with Abametapir.
AbciximabThe risk or severity of bleeding and hemorrhage can be increased when Zomepirac is combined with Abciximab.
AcebutololZomepirac may decrease the antihypertensive activities of Acebutolol.
AceclofenacThe risk or severity of adverse effects can be increased when Zomepirac is combined with Aceclofenac.
Food Interactions
Not Available

Products

Drug product information from 10+ global regions
Our datasets provide approved product information including:
dosage, form, labeller, route of administration, and marketing period.
Access now
Access drug product information from over 10 global regions.
Access now
Product Ingredients
IngredientUNIICASInChI Key
Zomepirac sodiumY0185WZ20964092-49-5ZJXLSCXDGPDZOL-UHFFFAOYSA-M
Zomepirac sodium anhydrousDA5B6IWF4664092-48-4SEEXPXUCHVGZGU-UHFFFAOYSA-M

Categories

ATC Codes
M01AB04 — Zomepirac
Drug Categories
Chemical TaxonomyProvided by Classyfire
Description
This compound belongs to the class of organic compounds known as aryl-phenylketones. These are aromatic compounds containing a ketone substituted by one aryl group, and a phenyl group.
Kingdom
Organic compounds
Super Class
Organic oxygen compounds
Class
Organooxygen compounds
Sub Class
Carbonyl compounds
Direct Parent
Aryl-phenylketones
Alternative Parents
Benzoyl derivatives / Chlorobenzenes / N-methylpyrroles / Aryl chlorides / Heteroaromatic compounds / Monocarboxylic acids and derivatives / Carboxylic acids / Azacyclic compounds / Organopnictogen compounds / Organonitrogen compounds
show 3 more
Substituents
Aromatic heteromonocyclic compound / Aryl chloride / Aryl halide / Aryl-phenylketone / Azacycle / Benzenoid / Benzoyl / Carboxylic acid / Carboxylic acid derivative / Chlorobenzene
show 15 more
Molecular Framework
Aromatic heteromonocyclic compounds
External Descriptors
monocarboxylic acid, monochlorobenzenes, aromatic ketone, pyrroles (CHEBI:35859)
Affected organisms
  • Humans and other mammals

Chemical Identifiers

UNII
822G987U9J
CAS number
33369-31-2
InChI Key
ZXVNMYWKKDOREA-UHFFFAOYSA-N
InChI
InChI=1S/C15H14ClNO3/c1-9-7-12(8-13(18)19)17(2)14(9)15(20)10-3-5-11(16)6-4-10/h3-7H,8H2,1-2H3,(H,18,19)
IUPAC Name
2-[5-(4-chlorobenzoyl)-1,4-dimethyl-1H-pyrrol-2-yl]acetic acid
SMILES
CN1C(CC(O)=O)=CC(C)=C1C(=O)C1=CC=C(Cl)C=C1

References

Synthesis Reference

James B. Doherty, Debra L. Allison, "Process for the preparation of zomepirac and related compounds." U.S. Patent US4374997, issued January, 1978.

US4374997
General References
Not Available
PubChem Compound
5733
PubChem Substance
46504549
ChemSpider
5531
BindingDB
50027952
RxNav
39994
ChEBI
35859
ChEMBL
CHEMBL19490
ZINC
ZINC000000057537
PharmGKB
PA166049188
PDBe Ligand
ZOM
Wikipedia
Zomepirac
PDB Entries
3r8h / 4jq3

Clinical Trials

Clinical Trials
Clinical Trial & Rare Diseases Add-on Data Package
Explore 4,000+ rare diseases, orphan drugs & condition pairs, clinical trial why stopped data, & more. Preview package
PhaseStatusPurposeConditionsCountStart DateWhy Stopped100+ additional columns

Pharmacoeconomics

Manufacturers
Not Available
Packagers
Not Available
Dosage Forms
Not Available
Prices
Not Available
Patents
Not Available

Properties

State
Solid
Experimental Properties
PropertyValueSource
melting point (°C)178.5 °CPhysProp
Predicted Properties
PropertyValueSource
Water Solubility0.026 mg/mLALOGPS
logP3.37ALOGPS
logP3.33Chemaxon
logS-4ALOGPS
pKa (Strongest Acidic)3.83Chemaxon
pKa (Strongest Basic)-7.8Chemaxon
Physiological Charge-1Chemaxon
Hydrogen Acceptor Count3Chemaxon
Hydrogen Donor Count1Chemaxon
Polar Surface Area59.3 Å2Chemaxon
Rotatable Bond Count4Chemaxon
Refractivity77.2 m3·mol-1Chemaxon
Polarizability29.68 Å3Chemaxon
Number of Rings2Chemaxon
Bioavailability1Chemaxon
Rule of FiveYesChemaxon
Ghose FilterYesChemaxon
Veber's RuleNoChemaxon
MDDR-like RuleNoChemaxon
Predicted ADMET Features
PropertyValueProbability
Human Intestinal Absorption+0.9714
Blood Brain Barrier+0.8608
Caco-2 permeable+0.7695
P-glycoprotein substrateNon-substrate0.7316
P-glycoprotein inhibitor INon-inhibitor0.9347
P-glycoprotein inhibitor IINon-inhibitor0.9287
Renal organic cation transporterNon-inhibitor0.7965
CYP450 2C9 substrateNon-substrate0.7288
CYP450 2D6 substrateNon-substrate0.8163
CYP450 3A4 substrateNon-substrate0.5337
CYP450 1A2 substrateNon-inhibitor0.7776
CYP450 2C9 inhibitorNon-inhibitor0.8844
CYP450 2D6 inhibitorNon-inhibitor0.8955
CYP450 2C19 inhibitorNon-inhibitor0.7741
CYP450 3A4 inhibitorNon-inhibitor0.8973
CYP450 inhibitory promiscuityLow CYP Inhibitory Promiscuity0.8525
Ames testNon AMES toxic0.8817
CarcinogenicityNon-carcinogens0.8425
BiodegradationNot ready biodegradable0.9476
Rat acute toxicity2.7638 LD50, mol/kg Not applicable
hERG inhibition (predictor I)Weak inhibitor0.9389
hERG inhibition (predictor II)Non-inhibitor0.8816
ADMET data is predicted using admetSAR, a free tool for evaluating chemical ADMET properties. (23092397)

Spectra

Mass Spec (NIST)
Not Available
Spectra
SpectrumSpectrum TypeSplash Key
Predicted GC-MS Spectrum - GC-MSPredicted GC-MSsplash10-000i-2940000000-8c64a42fd02683dc015a
Predicted MS/MS Spectrum - 10V, Positive (Annotated)Predicted LC-MS/MSsplash10-00dr-0490000000-58c0563ebe3ceb87e9d9
Predicted MS/MS Spectrum - 10V, Negative (Annotated)Predicted LC-MS/MSsplash10-0002-0090000000-887bb7d954ae31edcf55
Predicted MS/MS Spectrum - 20V, Positive (Annotated)Predicted LC-MS/MSsplash10-0079-0790000000-263152bf062824bf8538
Predicted MS/MS Spectrum - 20V, Negative (Annotated)Predicted LC-MS/MSsplash10-0a4l-0890000000-6f20d2e790abd7c7acac
Predicted MS/MS Spectrum - 40V, Positive (Annotated)Predicted LC-MS/MSsplash10-0089-1960000000-2aa6dff06d28e1ebaecb
Predicted MS/MS Spectrum - 40V, Negative (Annotated)Predicted LC-MS/MSsplash10-0a4i-0940000000-3efc1643e3a84973ab73
Predicted 1H NMR Spectrum1D NMRNot Applicable
Predicted 13C NMR Spectrum1D NMRNot Applicable
Chromatographic Properties
Collision Cross Sections (CCS)
AdductCCS Value (Å2)Source typeSource
[M-H]-165.14603
predicted
DeepCCS 1.0 (2019)
[M+H]+167.50406
predicted
DeepCCS 1.0 (2019)
[M+Na]+173.59721
predicted
DeepCCS 1.0 (2019)

Targets

Build, predict & validate machine-learning models
Use our structured and evidence-based datasets to unlock new
insights and accelerate drug research.
Learn more
Use our structured and evidence-based datasets to unlock new insights and accelerate drug research.
Learn more
Kind
Protein
Organism
Humans
Pharmacological action
Yes
Actions
Modulator
General Function
Dual cyclooxygenase and peroxidase that plays an important role in the biosynthesis pathway of prostanoids, a class of C20 oxylipins mainly derived from arachidonate ((5Z,8Z,11Z,14Z)-eicosatetraenoate, AA, C20:4(n-6)), with a particular role in the inflammatory response. The cyclooxygenase activity oxygenates AA to the hydroperoxy endoperoxide prostaglandin G2 (PGG2), and the peroxidase activity reduces PGG2 to the hydroxy endoperoxide prostaglandin H2 (PGH2), the precursor of all 2-series prostaglandins and thromboxanes. This complex transformation is initiated by abstraction of hydrogen at carbon 13 (with S-stereochemistry), followed by insertion of molecular O2 to form the endoperoxide bridge between carbon 9 and 11 that defines prostaglandins. The insertion of a second molecule of O2 (bis-oxygenase activity) yields a hydroperoxy group in PGG2 that is then reduced to PGH2 by two electrons (PubMed:7947975). Involved in the constitutive production of prostanoids in particular in the stomach and platelets. In gastric epithelial cells, it is a key step in the generation of prostaglandins, such as prostaglandin E2 (PGE2), which plays an important role in cytoprotection. In platelets, it is involved in the generation of thromboxane A2 (TXA2), which promotes platelet activation and aggregation, vasoconstriction and proliferation of vascular smooth muscle cells (Probable). Can also use linoleate (LA, (9Z,12Z)-octadecadienoate, C18:2(n-6)) as substrate and produce hydroxyoctadecadienoates (HODEs) in a regio- and stereospecific manner, being (9R)-HODE ((9R)-hydroxy-(10E,12Z)-octadecadienoate) and (13S)-HODE ((13S)-hydroxy-(9Z,11E)-octadecadienoate) its major products (By similarity)
Specific Function
heme binding
Gene Name
PTGS1
Uniprot ID
P23219
Uniprot Name
Prostaglandin G/H synthase 1
Molecular Weight
68685.82 Da
References
  1. Zhou Y, Zhang Y, Zhao D, Yu X, Shen X, Zhou Y, Wang S, Qiu Y, Chen Y, Zhu F: TTD: Therapeutic Target Database describing target druggability information. Nucleic Acids Res. 2024 Jan 5;52(D1):D1465-D1477. doi: 10.1093/nar/gkad751. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Yes
Actions
Modulator
General Function
Dual cyclooxygenase and peroxidase in the biosynthesis pathway of prostanoids, a class of C20 oxylipins mainly derived from arachidonate ((5Z,8Z,11Z,14Z)-eicosatetraenoate, AA, C20:4(n-6)), with a particular role in the inflammatory response (PubMed:11939906, PubMed:16373578, PubMed:19540099, PubMed:22942274, PubMed:26859324, PubMed:27226593, PubMed:7592599, PubMed:7947975, PubMed:9261177). The cyclooxygenase activity oxygenates AA to the hydroperoxy endoperoxide prostaglandin G2 (PGG2), and the peroxidase activity reduces PGG2 to the hydroxy endoperoxide prostaglandin H2 (PGH2), the precursor of all 2-series prostaglandins and thromboxanes (PubMed:16373578, PubMed:22942274, PubMed:26859324, PubMed:27226593, PubMed:7592599, PubMed:7947975, PubMed:9261177). This complex transformation is initiated by abstraction of hydrogen at carbon 13 (with S-stereochemistry), followed by insertion of molecular O2 to form the endoperoxide bridge between carbon 9 and 11 that defines prostaglandins. The insertion of a second molecule of O2 (bis-oxygenase activity) yields a hydroperoxy group in PGG2 that is then reduced to PGH2 by two electrons (PubMed:16373578, PubMed:22942274, PubMed:26859324, PubMed:27226593, PubMed:7592599, PubMed:7947975, PubMed:9261177). Similarly catalyzes successive cyclooxygenation and peroxidation of dihomo-gamma-linoleate (DGLA, C20:3(n-6)) and eicosapentaenoate (EPA, C20:5(n-3)) to corresponding PGH1 and PGH3, the precursors of 1- and 3-series prostaglandins (PubMed:11939906, PubMed:19540099). In an alternative pathway of prostanoid biosynthesis, converts 2-arachidonoyl lysophopholipids to prostanoid lysophopholipids, which are then hydrolyzed by intracellular phospholipases to release free prostanoids (PubMed:27642067). Metabolizes 2-arachidonoyl glycerol yielding the glyceryl ester of PGH2, a process that can contribute to pain response (PubMed:22942274). Generates lipid mediators from n-3 and n-6 polyunsaturated fatty acids (PUFAs) via a lipoxygenase-type mechanism. Oxygenates PUFAs to hydroperoxy compounds and then reduces them to corresponding alcohols (PubMed:11034610, PubMed:11192938, PubMed:9048568, PubMed:9261177). Plays a role in the generation of resolution phase interaction products (resolvins) during both sterile and infectious inflammation (PubMed:12391014). Metabolizes docosahexaenoate (DHA, C22:6(n-3)) to 17R-HDHA, a precursor of the D-series resolvins (RvDs) (PubMed:12391014). As a component of the biosynthetic pathway of E-series resolvins (RvEs), converts eicosapentaenoate (EPA, C20:5(n-3)) primarily to 18S-HEPE that is further metabolized by ALOX5 and LTA4H to generate 18S-RvE1 and 18S-RvE2 (PubMed:21206090). In vascular endothelial cells, converts docosapentaenoate (DPA, C22:5(n-3)) to 13R-HDPA, a precursor for 13-series resolvins (RvTs) shown to activate macrophage phagocytosis during bacterial infection (PubMed:26236990). In activated leukocytes, contributes to oxygenation of hydroxyeicosatetraenoates (HETE) to diHETES (5,15-diHETE and 5,11-diHETE) (PubMed:22068350, PubMed:26282205). Can also use linoleate (LA, (9Z,12Z)-octadecadienoate, C18:2(n-6)) as substrate and produce hydroxyoctadecadienoates (HODEs) in a regio- and stereospecific manner, being (9R)-HODE ((9R)-hydroxy-(10E,12Z)-octadecadienoate) and (13S)-HODE ((13S)-hydroxy-(9Z,11E)-octadecadienoate) its major products (By similarity). During neuroinflammation, plays a role in neuronal secretion of specialized preresolving mediators (SPMs) 15R-lipoxin A4 that regulates phagocytic microglia (By similarity)
Specific Function
enzyme binding
Gene Name
PTGS2
Uniprot ID
P35354
Uniprot Name
Prostaglandin G/H synthase 2
Molecular Weight
68995.625 Da
References
  1. Zhou Y, Zhang Y, Zhao D, Yu X, Shen X, Zhou Y, Wang S, Qiu Y, Chen Y, Zhu F: TTD: Therapeutic Target Database describing target druggability information. Nucleic Acids Res. 2024 Jan 5;52(D1):D1465-D1477. doi: 10.1093/nar/gkad751. [Article]
Kind
Protein
Organism
Humans
Pharmacological action
Unknown
General Function
Receptor for prostaglandin D2 (PGD2). Coupled to the G(i)-protein. Receptor activation may result in pertussis toxin-sensitive decreases in cAMP levels and Ca(2+) mobilization. PI3K signaling is also implicated in mediating PTGDR2 effects. PGD2 induced receptor internalization. CRTH2 internalization can be regulated by diverse kinases such as, PKC, PKA, GRK2, GPRK5/GRK5 and GRK6. Receptor activation is responsible, at least in part, in immune regulation and allergic/inflammation responses
Specific Function
G protein-coupled receptor activity
Gene Name
PTGDR2
Uniprot ID
Q9Y5Y4
Uniprot Name
Prostaglandin D2 receptor 2
Molecular Weight
43267.15 Da
References
  1. Hata AN, Lybrand TP, Marnett LJ, Breyer RM: Structural determinants of arylacetic acid nonsteroidal anti-inflammatory drugs necessary for binding and activation of the prostaglandin D2 receptor CRTH2. Mol Pharmacol. 2005 Mar;67(3):640-7. Epub 2004 Nov 24. [Article]

Enzymes

Kind
Protein
Organism
Humans
Pharmacological action
Unknown
Actions
Substrate
General Function
A cytochrome P450 monooxygenase involved in the metabolism of sterols, steroid hormones, retinoids and fatty acids (PubMed:10681376, PubMed:11093772, PubMed:11555828, PubMed:12865317, PubMed:14559847, PubMed:15373842, PubMed:15764715, PubMed:19965576, PubMed:20702771, PubMed:21490593, PubMed:21576599). Mechanistically, uses molecular oxygen inserting one oxygen atom into a substrate, and reducing the second into a water molecule, with two electrons provided by NADPH via cytochrome P450 reductase (NADPH--hemoprotein reductase). Catalyzes the hydroxylation of carbon-hydrogen bonds (PubMed:12865317, PubMed:14559847, PubMed:15373842, PubMed:15764715, PubMed:21490593, PubMed:21576599, PubMed:2732228). Exhibits high catalytic activity for the formation of hydroxyestrogens from estrone (E1) and 17beta-estradiol (E2), namely 2-hydroxy E1 and E2, as well as D-ring hydroxylated E1 and E2 at the C-16 position (PubMed:11555828, PubMed:12865317, PubMed:14559847). Plays a role in the metabolism of androgens, particularly in oxidative deactivation of testosterone (PubMed:15373842, PubMed:15764715, PubMed:22773874, PubMed:2732228). Metabolizes testosterone to less biologically active 2beta- and 6beta-hydroxytestosterones (PubMed:15373842, PubMed:15764715, PubMed:2732228). Contributes to the formation of hydroxycholesterols (oxysterols), particularly A-ring hydroxylated cholesterol at the C-4beta position, and side chain hydroxylated cholesterol at the C-25 position, likely contributing to cholesterol degradation and bile acid biosynthesis (PubMed:21576599). Catalyzes bisallylic hydroxylation of polyunsaturated fatty acids (PUFA) (PubMed:9435160). Catalyzes the epoxidation of double bonds of PUFA with a preference for the last double bond (PubMed:19965576). Metabolizes endocannabinoid arachidonoylethanolamide (anandamide) to 8,9-, 11,12-, and 14,15-epoxyeicosatrienoic acid ethanolamides (EpETrE-EAs), potentially modulating endocannabinoid system signaling (PubMed:20702771). Plays a role in the metabolism of retinoids. Displays high catalytic activity for oxidation of all-trans-retinol to all-trans-retinal, a rate-limiting step for the biosynthesis of all-trans-retinoic acid (atRA) (PubMed:10681376). Further metabolizes atRA toward 4-hydroxyretinoate and may play a role in hepatic atRA clearance (PubMed:11093772). Responsible for oxidative metabolism of xenobiotics. Acts as a 2-exo-monooxygenase for plant lipid 1,8-cineole (eucalyptol) (PubMed:11159812). Metabolizes the majority of the administered drugs. Catalyzes sulfoxidation of the anthelmintics albendazole and fenbendazole (PubMed:10759686). Hydroxylates antimalarial drug quinine (PubMed:8968357). Acts as a 1,4-cineole 2-exo-monooxygenase (PubMed:11695850). Also involved in vitamin D catabolism and calcium homeostasis. Catalyzes the inactivation of the active hormone calcitriol (1-alpha,25-dihydroxyvitamin D(3)) (PubMed:29461981)
Specific Function
1,8-cineole 2-exo-monooxygenase activity
Gene Name
CYP3A4
Uniprot ID
P08684
Uniprot Name
Cytochrome P450 3A4
Molecular Weight
57342.67 Da
References
  1. Chen Q, Doss GA, Tung EC, Liu W, Tang YS, Braun MP, Didolkar V, Strauss JR, Wang RW, Stearns RA, Evans DC, Baillie TA, Tang W: Evidence for the bioactivation of zomepirac and tolmetin by an oxidative pathway: identification of glutathione adducts in vitro in human liver microsomes and in vivo in rats. Drug Metab Dispos. 2006 Jan;34(1):145-51. doi: 10.1124/dmd.105.004341. Epub 2005 Oct 26. [Article]

Carriers

Kind
Protein
Organism
Humans
Pharmacological action
Unknown
General Function
Binds water, Ca(2+), Na(+), K(+), fatty acids, hormones, bilirubin and drugs (Probable). Its main function is the regulation of the colloidal osmotic pressure of blood (Probable). Major zinc transporter in plasma, typically binds about 80% of all plasma zinc (PubMed:19021548). Major calcium and magnesium transporter in plasma, binds approximately 45% of circulating calcium and magnesium in plasma (By similarity). Potentially has more than two calcium-binding sites and might additionally bind calcium in a non-specific manner (By similarity). The shared binding site between zinc and calcium at residue Asp-273 suggests a crosstalk between zinc and calcium transport in the blood (By similarity). The rank order of affinity is zinc > calcium > magnesium (By similarity). Binds to the bacterial siderophore enterobactin and inhibits enterobactin-mediated iron uptake of E.coli from ferric transferrin, and may thereby limit the utilization of iron and growth of enteric bacteria such as E.coli (PubMed:6234017). Does not prevent iron uptake by the bacterial siderophore aerobactin (PubMed:6234017)
Specific Function
antioxidant activity
Gene Name
ALB
Uniprot ID
P02768
Uniprot Name
Albumin
Molecular Weight
69365.94 Da
References
  1. Pritchard JF, O'Neill PJ, Affrime MB, Lowenthal DT: Influence of uremia, hemodialysis, and nonesterified fatty acids on zomepirac plasma protein binding. Clin Pharmacol Ther. 1983 Nov;34(5):681-8. [Article]
  2. Ojingwa JC, Spahn-Langguth H, Benet LZ: Reversible binding of tolmetin, zomepirac, and their glucuronide conjugates to human serum albumin and plasma. J Pharmacokinet Biopharm. 1994 Feb;22(1):19-40. [Article]

Drug created at September 11, 2007 20:33 / Updated at August 26, 2024 19:22