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Record Information
Creation Date2009-07-21 20:28:00 UTC
Update Date2014-12-24 20:25:53 UTC
Accession NumberT3D2937
Common NameFelbamate
ClassSmall Molecule
DescriptionFelbamate is an anticonvulsant drug used in the treatment of epilepsy. It is used to treat partial seizures (with and without generalization) in adults and partial and generalized seizures associated with Lennox-Gastaut syndrome in children. It has a weak inhibitory effect on GABA receptor binding sites.
Compound Type
  • Amine
  • Anticonvulsant
  • Antiepileptic Agent
  • Drug
  • Ester
  • Ether
  • Metabolite
  • Neuroprotective Agent
  • Organic Compound
  • Synthetic Compound
Chemical Structure
2-Phenyl-1,3-propanediol dicarbamate
Carbamic acid 2-phenyltrimethylene ester
Carbamic acid 3-carbamoyloxy-2-phenyl-propyl ester
Felbamic acid
Chemical FormulaC11H14N2O4
Average Molecular Mass238.240 g/mol
Monoisotopic Mass238.095 g/mol
CAS Registry Number25451-15-4
IUPAC Name3-(carbamoyloxy)-2-phenylpropyl carbamate
Traditional Namefelbamate
InChI IdentifierInChI=1S/C11H14N2O4/c12-10(14)16-6-9(7-17-11(13)15)8-4-2-1-3-5-8/h1-5,9H,6-7H2,(H2,12,14)(H2,13,15)
Chemical Taxonomy
Description belongs to the class of organic compounds known as benzene and substituted derivatives. These are aromatic compounds containing one monocyclic ring system consisting of benzene.
KingdomOrganic compounds
Super ClassBenzenoids
ClassBenzene and substituted derivatives
Sub ClassNot Available
Direct ParentBenzene and substituted derivatives
Alternative Parents
  • Monocyclic benzene moiety
  • Carbamic acid ester
  • Carbonic acid derivative
  • Organic nitrogen compound
  • Organic oxygen compound
  • Organopnictogen compound
  • Organic oxide
  • Hydrocarbon derivative
  • Organooxygen compound
  • Organonitrogen compound
  • Carbonyl group
  • Aromatic homomonocyclic compound
Molecular FrameworkAromatic homomonocyclic compounds
External Descriptors
Biological Properties
StatusDetected and Not Quantified
Cellular Locations
  • Membrane
Biofluid LocationsNot Available
Tissue LocationsNot Available
PathwaysNot Available
Biological RolesNot Available
Chemical RolesNot Available
Physical Properties
AppearanceWhite powder.
Experimental Properties
Melting Point151.5°C
Boiling PointNot Available
SolubilitySlightly soluble in water
Predicted Properties
Water Solubility0.74 g/LALOGPS
pKa (Strongest Acidic)14.98ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area104.64 ŲChemAxon
Rotatable Bond Count7ChemAxon
Refractivity59.59 m³·mol⁻¹ChemAxon
Polarizability23.52 ųChemAxon
Number of Rings1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectrum TypeDescriptionSplash KeyView
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-0fdo-6900000000-0f546bad5ba921f66b40JSpectraViewer
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-qTof , Positivesplash10-014i-2900000000-880b1fb1822a512a352cJSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-qTof , Positivesplash10-016r-1900000000-f04127a0f39b9e0b001fJSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - , positivesplash10-014i-2900000000-880b1fb1822a512a352cJSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - , positivesplash10-016r-1900000000-f04127a0f39b9e0b001fJSpectraViewer | MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-000i-2390000000-02895c4e844f089545e6JSpectraViewer
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-004i-3920000000-e7c2dfe58df4e1e34dccJSpectraViewer
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-004l-9500000000-e824587a3374313f7cc4JSpectraViewer
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-0006-9010000000-b6e0a295dcbb7a9c5266JSpectraViewer
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0006-9000000000-d549b5cb79133b3aa46eJSpectraViewer
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0006-9000000000-6a77d5d551bb1bd0c3a6JSpectraViewer
MSMass Spectrum (Electron Ionization)splash10-0udi-5900000000-673caaab3dded596924cJSpectraViewer | MoNA
Toxicity Profile
Route of ExposureOral. >90%
Mechanism of ToxicityThe mechanism by which felbamate exerts its anticonvulsant activity is unknown, but in animal test systems designed to detect anticonvulsant activity, felbamate has properties in common with other marketed anticonvulsants. In vitro receptor binding studies suggest that felbamate may be an antagonist at the strychnine-insensitive glycine-recognition site of the N-methyl-D-aspartate (NMDA) receptor-ionophore complex. Antagonism of the NMDA receptor glycine binding site may block the effects of the excitatory amino acids and suppress seizure activity. Animal studies indicate that felbamate may increase the seizure threshold and may decrease seizure spread. It is also indicated that felbamate has weak inhibitory effects on GABA-receptor binding, benzodiazepine receptor binding.
MetabolismHepatic Half Life: 20-23 hours
Toxicity ValuesLD50: 5000 mg/kg (Oral, Rat) (2)
Lethal DoseNot Available
Carcinogenicity (IARC Classification)No indication of carcinogenicity to humans (not listed by IARC).
Uses/SourcesFor use only in those patients who respond inadequately to alternative treatments and whose epilepsy is so severe that a substantial risk of aplastic anemia and/or liver failure is deemed acceptable in light of the benefits conferred by its use.
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.
SymptomsNot Available
TreatmentGeneral supportive measures should be employed if overdosage occurs. It is not known if felbamate is dialyzable. (4)
Normal Concentrations
Not Available
Abnormal Concentrations
Not Available
DrugBank IDDB00949
PubChem Compound ID3331
ChemSpider ID3214
UniProt IDNot Available
ChEBI ID4995
BioCyc IDNot Available
CTD IDNot Available
Stitch IDFelbamate
PDB IDNot Available
ACToR IDNot Available
Wikipedia LinkFelbamate
Synthesis ReferenceNot Available
General References
  1. Leppik IE, Dreifuss FE, Pledger GW, Graves NM, Santilli N, Drury I, Tsay JY, Jacobs MP, Bertram E, Cereghino JJ, et al.: Felbamate for partial seizures: results of a controlled clinical trial. Neurology. 1991 Nov;41(11):1785-9. [1944909 ]
  2. Wishart DS, Knox C, Guo AC, Cheng D, Shrivastava S, Tzur D, Gautam B, Hassanali M: DrugBank: a knowledgebase for drugs, drug actions and drug targets. Nucleic Acids Res. 2008 Jan;36(Database issue):D901-6. Epub 2007 Nov 29. [18048412 ]
  3. [Link]
  4. RxList: The Internet Drug Index (2009). [Link]
Gene Regulation
Up-Regulated GenesNot Available
Down-Regulated GenesNot Available


General Function:
Zinc ion binding
Specific Function:
NMDA receptor subtype of glutamate-gated ion channels with high calcium permeability and voltage-dependent sensitivity to magnesium. Mediated by glycine. In concert with DAPK1 at extrasynaptic sites, acts as a central mediator for stroke damage. Its phosphorylation at Ser-1303 by DAPK1 enhances synaptic NMDA receptor channel activity inducing injurious Ca2+ influx through them, resulting in an irreversible neuronal death (By similarity).
Gene Name:
Uniprot ID:
Molecular Weight:
166365.885 Da
  1. Chen X, Ji ZL, Chen YZ: TTD: Therapeutic Target Database. Nucleic Acids Res. 2002 Jan 1;30(1):412-5. [11752352 ]
  2. Kleckner NW, Glazewski JC, Chen CC, Moscrip TD: Subtype-selective antagonism of N-methyl-D-aspartate receptors by felbamate: insights into the mechanism of action. J Pharmacol Exp Ther. 1999 May;289(2):886-94. [10215667 ]
  3. Harty TP, Rogawski MA: Felbamate block of recombinant N-methyl-D-aspartate receptors: selectivity for the NR2B subunit. Epilepsy Res. 2000 Mar;39(1):47-55. [10690753 ]
General Function:
Protein phosphatase 2a binding
Specific Function:
NMDA receptor subtype of glutamate-gated ion channels with reduced single-channel conductance, low calcium permeability and low voltage-dependent sensitivity to magnesium. Mediated by glycine. May play a role in the development of dendritic spines. May play a role in PPP2CB-NMDAR mediated signaling mechanism (By similarity).
Gene Name:
Uniprot ID:
Molecular Weight:
125464.07 Da
  1. Overington JP, Al-Lazikani B, Hopkins AL: How many drug targets are there? Nat Rev Drug Discov. 2006 Dec;5(12):993-6. [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. [17016423 ]
General Function:
Zinc ion binding
Specific Function:
NMDA receptor subtype of glutamate-gated ion channels possesses high calcium permeability and voltage-dependent sensitivity to magnesium. Activation requires binding of agonist to both types of subunits.
Gene Name:
Uniprot ID:
Molecular Weight:
165281.215 Da
  1. Chen X, Ji ZL, Chen YZ: TTD: Therapeutic Target Database. Nucleic Acids Res. 2002 Jan 1;30(1):412-5. [11752352 ]