Methsuximide (T3D3069)

IdentificationTaxonomyBiological PropertiesPhysical PropertiesToxicity ProfileSpectraConcentrationsLinksReferencesGene RegulationTargets (1)XML
Targets (1)
Record Information
Version2.0
Creation Date2009-07-21 20:29:00 UTC
Update Date2014-12-24 20:25:56 UTC
Accession NumberT3D3069
Identification
Common NameMethsuximide
ClassSmall Molecule
DescriptionMethsuximide is only found in individuals that have used or taken this drug. It is an anticonvulsant medication. It is sold by Pfizer under the name Petinutin. [Wikipedia] Binds to T-type voltage sensitive calcium channels. Voltage-sensitive calcium channels (VSCC) mediate the entry of calcium ions into excitable cells and are also involved in a variety of calcium-dependent processes, including muscle contraction, hormone or neurotransmitter release, gene expression, cell motility, cell division and cell death. The isoform alpha-1G gives rise to T-type calcium currents. T-type calcium channels belong to the low-voltage activated (LVA) group and are strongly blocked by mibefradil. A particularity of this type of channels is an opening at quite negative potentials and a voltage-dependent inactivation. T-type channels serve pacemaking functions in both central neurons and cardiac nodal cells and support calcium signaling in secretory cells and vascular smooth muscle. They may also be involved in the modulation of firing patterns of neurons which is important for information processing as well as in cell growth processes.
Compound Type
  • Amide
  • Amine
  • Anticonvulsant
  • Drug
  • Metabolite
  • Organic Compound
  • Succinimide
  • Synthetic Compound
Chemical Structure
Thumb
MOLSDFPDBSMILESInChI
Synonyms
Synonym
(RS)-1,3-Dimethyl-3-phenyl-2,5-pyrrolidindion
1,3-Dimethyl-3-phenyl-2,5-dioxopyrrolidine
1,3-Dimethyl-3-phenyl-2,5-pyrrolidinedione
1,3-Dimethyl-3-phenyl-pyrrolidin-2,5-dione
1,3-Dimethyl-3-phenylsuccinimide
alpha-Methyl-alpha-phenyl N-methyl succinimide
alpha-Methylphensuximide
Celontin
Mesuximida
Mesuximide
Mesuximidum
Methsuximid
Metosuccimmide
Metsuccimide
N,2-Dimethyl-2-phenylsuccinimide
N-Methyl-alpha-methyl-alpha-phenylsuccinimide
Petinutin
Chemical FormulaC12H13NO2
Average Molecular Mass203.237 g/mol
Monoisotopic Mass203.095 g/mol
CAS Registry Number77-41-8
IUPAC Name1,3-dimethyl-3-phenylpyrrolidine-2,5-dione
Traditional Namemethsuximide
SMILESCN1C(=O)CC(C)(C1=O)C1=CC=CC=C1
InChI IdentifierInChI=1/C12H13NO2/c1-12(9-6-4-3-5-7-9)8-10(14)13(2)11(12)15/h3-7H,8H2,1-2H3
InChI KeyInChIKey=AJXPJJZHWIXJCJ-UHFFFAOYNA-N
Chemical Taxonomy
Description belongs to the class of organic compounds known as phenylpyrrolidines. These are polycyclic aromatic compounds containing a benzene ring linked to a pyrrolidine ring through a CC or CN bond. Pyrrolidine is a five-membered saturated aliphatic heterocycle with one nitrogen atom and four carbon atoms.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassPyrrolidines
Sub ClassPhenylpyrrolidines
Direct ParentPhenylpyrrolidines
Alternative Parents
Substituents
  • 3-phenylpyrrolidine
  • Monocyclic benzene moiety
  • Carboxylic acid imide, n-substituted
  • Pyrrolidone
  • 2-pyrrolidone
  • N-alkylpyrrolidine
  • Benzenoid
  • Carboxylic acid imide
  • Dicarboximide
  • Pyrrole
  • Lactam
  • Carboxylic acid derivative
  • Azacycle
  • Carbonyl group
  • Organopnictogen compound
  • Organooxygen compound
  • Organonitrogen compound
  • Organic oxygen compound
  • Organic nitrogen compound
  • Organic oxide
  • Hydrocarbon derivative
  • Aromatic heteromonocyclic compound
Molecular FrameworkAromatic heteromonocyclic compounds
External DescriptorsNot Available
Biological Properties
StatusDetected and Not Quantified
OriginExogenous
Cellular Locations
  • Cytoplasm
  • Extracellular
  • Membrane
Biofluid LocationsNot Available
Tissue LocationsNot Available
PathwaysNot Available
ApplicationsNot Available
Biological RolesNot Available
Chemical RolesNot Available
Physical Properties
StateSolid
AppearanceWhite powder.
Experimental Properties
PropertyValue
Melting Point52.5°C
Boiling Point121.5°C at 1.00E-01 mm Hg
Solubility2.13e+00 g/L
LogPNot Available
Predicted Properties
PropertyValueSource
Water Solubility2.13 g/LALOGPS
logP1.46ALOGPS
logP1.46ChemAxon
logS-2ALOGPS
pKa (Strongest Acidic)19.03ChemAxon
pKa (Strongest Basic)-7.2ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count0ChemAxon
Polar Surface Area37.38 ŲChemAxon
Rotatable Bond Count1ChemAxon
Refractivity56.35 m³·mol⁻¹ChemAxon
Polarizability21.4 ųChemAxon
Number of Rings2ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectra
Spectra
Spectrum TypeDescriptionSplash KeyDeposition DateView
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-014i-3910000000-9cae394b5b94a483c4012017-09-12View Spectrum
GC-MSGC-MS Spectrum - CI-B (Non-derivatized)splash10-0udi-0090000000-31b6e0b0429306f0d6da2017-09-12View Spectrum
GC-MSGC-MS Spectrum - CI-B (Non-derivatized)splash10-0udi-0490000000-37eb2b7cfbb3d8b42e972017-09-12View Spectrum
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-014i-3910000000-9cae394b5b94a483c4012018-05-18View Spectrum
GC-MSGC-MS Spectrum - CI-B (Non-derivatized)splash10-0udi-0090000000-31b6e0b0429306f0d6da2018-05-18View Spectrum
GC-MSGC-MS Spectrum - CI-B (Non-derivatized)splash10-0udi-0490000000-37eb2b7cfbb3d8b42e972018-05-18View Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-0uxr-0900000000-e0b7a163d2486262e40a2017-09-01View Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12View Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12View Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QFT , positivesplash10-0udi-0390000000-00d729cf9e85b7d750682017-09-14View Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QFT , positivesplash10-0udi-1690000000-0a263ad37a0831b81fb32017-09-14View Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QFT , positivesplash10-014i-4910000000-eb0a383017c0566e6a112017-09-14View Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QFT , positivesplash10-014l-9800000000-5df2aae06682d9488eef2017-09-14View Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QFT , positivesplash10-05mo-9400000000-6de622fc3efce00a0b342017-09-14View Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QFT , positivesplash10-052f-9300000000-1e2faae8b516a3fc7ad52017-09-14View Spectrum
LC-MS/MSLC-MS/MS Spectrum - 45V, Positivesplash10-014i-4910000000-3edaee012b8d0ab6abab2021-09-20View Spectrum
LC-MS/MSLC-MS/MS Spectrum - 15V, Positivesplash10-0udi-0290000000-7e1ec4ffc809d1b17f692021-09-20View Spectrum
LC-MS/MSLC-MS/MS Spectrum - 30V, Positivesplash10-0udi-1690000000-634173d911d8c9526bda2021-09-20View Spectrum
LC-MS/MSLC-MS/MS Spectrum - 60V, Positivesplash10-014l-9800000000-fe9ec2e272ddfa8521022021-09-20View Spectrum
LC-MS/MSLC-MS/MS Spectrum - 75V, Positivesplash10-05mo-9400000000-0014609b9f8d422ac9b12021-09-20View Spectrum
LC-MS/MSLC-MS/MS Spectrum - 90V, Positivesplash10-052f-9200000000-4e2b70d601f365fae12e2021-09-20View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0udi-0090000000-7bd86034fa816a0243c32016-08-01View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0udi-0190000000-4ce7c75dd0aecca4396f2016-08-01View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0ufr-9600000000-bf46c29670f52d82e8ab2016-08-01View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-0udi-0090000000-e3773732d15693b117d92016-08-03View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0udi-1190000000-d519c86bfcc321cacfa42016-08-03View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0udi-6900000000-7c462fe20661937889fd2016-08-03View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0udi-0090000000-b81b75e675178531e9bb2021-10-11View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0udi-1960000000-8ff948008064ff6c3bf32021-10-11View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-014l-8900000000-b05d83746feabe3e2ce42021-10-11View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-0udi-0090000000-341f1e0a28e483a04bd32021-10-11View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0ufr-6920000000-366e7547f18799baaf742021-10-11View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-004i-9100000000-675b081ad6d6943d7c752021-10-11View Spectrum
MSMass Spectrum (Electron Ionization)splash10-014i-4910000000-aa3742fc04cdbcda351f2014-09-20View Spectrum
1D NMR1H NMR Spectrum (1D, 100 MHz, D2O, predicted)Not Available2021-09-29View Spectrum
1D NMR13C NMR Spectrum (1D, 100 MHz, D2O, predicted)Not Available2021-09-29View Spectrum
1D NMR1H NMR Spectrum (1D, 1000 MHz, D2O, predicted)Not Available2021-09-29View Spectrum
1D NMR13C NMR Spectrum (1D, 1000 MHz, D2O, predicted)Not Available2021-09-29View Spectrum
1D NMR1H NMR Spectrum (1D, 200 MHz, D2O, predicted)Not Available2021-09-29View Spectrum
1D NMR13C NMR Spectrum (1D, 200 MHz, D2O, predicted)Not Available2021-09-29View Spectrum
1D NMR1H NMR Spectrum (1D, 300 MHz, D2O, predicted)Not Available2021-09-29View Spectrum
1D NMR13C NMR Spectrum (1D, 300 MHz, D2O, predicted)Not Available2021-09-29View Spectrum
1D NMR1H NMR Spectrum (1D, 400 MHz, D2O, predicted)Not Available2021-09-29View Spectrum
1D NMR13C NMR Spectrum (1D, 400 MHz, D2O, predicted)Not Available2021-09-29View Spectrum
1D NMR1H NMR Spectrum (1D, 500 MHz, D2O, predicted)Not Available2021-09-29View Spectrum
1D NMR13C NMR Spectrum (1D, 500 MHz, D2O, predicted)Not Available2021-09-29View Spectrum
1D NMR1H NMR Spectrum (1D, 600 MHz, D2O, predicted)Not Available2021-09-29View Spectrum
1D NMR13C NMR Spectrum (1D, 600 MHz, D2O, predicted)Not Available2021-09-29View Spectrum
1D NMR1H NMR Spectrum (1D, 700 MHz, D2O, predicted)Not Available2021-09-29View Spectrum
1D NMR13C NMR Spectrum (1D, 700 MHz, D2O, predicted)Not Available2021-09-29View Spectrum
1D NMR1H NMR Spectrum (1D, 800 MHz, D2O, predicted)Not Available2021-09-29View Spectrum
1D NMR13C NMR Spectrum (1D, 800 MHz, D2O, predicted)Not Available2021-09-29View Spectrum
1D NMR1H NMR Spectrum (1D, 900 MHz, D2O, predicted)Not Available2021-09-29View Spectrum
1D NMR13C NMR Spectrum (1D, 900 MHz, D2O, predicted)Not Available2021-09-29View Spectrum
Toxicity Profile
Route of ExposureOral
Mechanism of ToxicityMethsuximide suppresses the paroxysmal three cycle per second spike and wave activity associated with lapses of consciousness which is common in absence (petit mal) seizures. The frequency of epileptiform attacks is reduced, apparently by depression of the motor cortex and elevation of the threshold of the central nervous system to convulsive stimuli.
Metabolism Half Life: 1.4-2.6 hours for mesuximide and 28-38 hours for the active metabolite.
Toxicity ValuesNot Available
Lethal DoseNot Available
Carcinogenicity (IARC Classification)No indication of carcinogenicity to humans (not listed by IARC).
Uses/SourcesFor the control of absence (petit mal) seizures that are refractory to other drugs.
Minimum Risk LevelNot Available
Health EffectsMay cause a potentially dangerous rash that may develop into Stevens Johnson syndrome, an extremely rare but potentially fatal skin disease.
SymptomsAcute overdoses may produce nausea, vomiting, and CNS depression including coma with respiratory depression. Levels greater than 40 µg/mL have caused toxicity and coma has been seen at levels of 150 µg/mL.
TreatmentTreatment should include emesis (unless the patient is or could rapidly become obtunded, comatose, or convulsing) or gastric lavage, activated charcoal, cathartics, and general supportive measures. Charcoal hemoperfusion may be useful in removing the N-desmethyl metabolite of methsuximide. Forced diuresis and exchange transfusions are ineffective. (3)
Normal Concentrations
Not Available
Abnormal Concentrations
Not Available
DrugBank IDDB05246
HMDB IDHMDB15611
PubChem Compound ID6476
ChEMBL IDCHEMBL697
ChemSpider ID6231
KEGG IDNot Available
UniProt IDNot Available
OMIM ID
ChEBI ID131857
BioCyc IDNot Available
CTD IDNot Available
Stitch IDMethsuximide
PDB IDNot Available
ACToR IDNot Available
Wikipedia LinkMethsuximide
References
Synthesis ReferenceNot Available
MSDST3D3069.pdf
General References
  1. Hurst DL: Methsuximide therapy of juvenile myoclonic epilepsy. Seizure. 1996 Mar;5(1):47-50. [8777552 ]
  2. Besag FM, Berry DJ, Pool F: Methsuximide lowers lamotrigine blood levels: A pharmacokinetic antiepileptic drug interaction. Epilepsia. 2000 May;41(5):624-7. [10802770 ]
  3. RxList: The Internet Drug Index (2009). [Link]
Gene Regulation
Up-Regulated GenesNot Available
Down-Regulated GenesNot Available

Targets

Target Details
1. Voltage-dependent T-type calcium channel subunit alpha-1G
General Function:
Scaffold protein binding
Specific Function:
Voltage-sensitive calcium channels (VSCC) mediate the entry of calcium ions into excitable cells and are also involved in a variety of calcium-dependent processes, including muscle contraction, hormone or neurotransmitter release, gene expression, cell motility, cell division and cell death. The isoform alpha-1G gives rise to T-type calcium currents. T-type calcium channels belong to the "low-voltage activated (LVA)" group and are strongly blocked by mibefradil. A particularity of this type of channel is an opening at quite negative potentials and a voltage-dependent inactivation. T-type channels serve pacemaking functions in both central neurons and cardiac nodal cells and support calcium signaling in secretory cells and vascular smooth muscle. They may also be involved in the modulation of firing patterns of neurons which is important for information processing as well as in cell growth processes.
Gene Name:
CACNA1G
Uniprot ID:
O43497
Molecular Weight:
262468.62 Da
References
  1. Gomora JC, Daud AN, Weiergraber M, Perez-Reyes E: Block of cloned human T-type calcium channels by succinimide antiepileptic drugs. Mol Pharmacol. 2001 Nov;60(5):1121-32. [11641441 ]
  2. Coulter DA, Huguenard JR, Prince DA: Characterization of ethosuximide reduction of low-threshold calcium current in thalamic neurons. Ann Neurol. 1989 Jun;25(6):582-93. [2545161 ]
  3. Wang G, Thompson SM: Maladaptive homeostatic plasticity in a rodent model of central pain syndrome: thalamic hyperexcitability after spinothalamic tract lesions. J Neurosci. 2008 Nov 12;28(46):11959-69. doi: 10.1523/JNEUROSCI.3296-08.2008. [19005061 ]
  4. Matthews EA, Dickenson AH: Effects of ethosuximide, a T-type Ca(2+) channel blocker, on dorsal horn neuronal responses in rats. Eur J Pharmacol. 2001 Mar;415(2-3):141-9. [11274992 ]