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Record Information
Version5.0
StatusDetected but not Quantified
Creation Date2021-09-11 10:29:30 UTC
Update Date2021-09-26 23:05:14 UTC
HMDB IDHMDB0252567
Secondary Accession NumbersNone
Metabolite Identification
Common NameGabapentin enacarbil
DescriptionGabapentin enacarbil, also known as horizant or XP 13512, belongs to the class of organic compounds known as gamma amino acids and derivatives. These are amino acids having a (-NH2) group attached to the gamma carbon atom. Gabapentin enacarbil is a drug which is used for the treatment of adult restless legs syndrome (rls) and postherpetic neuralgia (phn). Based on a literature review a significant number of articles have been published on Gabapentin enacarbil. This compound has been identified in human blood as reported by (PMID: 31557052 ). Gabapentin enacarbil is not a naturally occurring metabolite and is only found in those individuals exposed to this compound or its derivatives. Technically Gabapentin enacarbil is part of the human exposome. The exposome can be defined as the collection of all the exposures of an individual in a lifetime and how those exposures relate to health. An individual's exposure begins before birth and includes insults from environmental and occupational sources.
Structure
Thumb
Synonyms
ValueSource
Gabapentina enacarbiloChEBI
Gabapentine enacarbilChEBI
Gabapentinum enacarbilumChEBI
HorizantChEBI
XP 13512ChEBI
XP-13512ChEBI
XP13512ChEBI
1-(((alpha-Isobutanoyloxyethoxy)carbonyl)aminomethyl)-1-cyclohexaneacetic acidHMDB
Chemical FormulaC16H27NO6
Average Molecular Weight329.393
Monoisotopic Molecular Weight329.183837593
IUPAC Name2-(1-{[({1-[(2-methylpropanoyl)oxy]ethoxy}carbonyl)amino]methyl}cyclohexyl)acetic acid
Traditional Namegabapentin enacarbil
CAS Registry NumberNot Available
SMILES
CC(C)C(=O)OC(C)OC(=O)NCC1(CC(O)=O)CCCCC1
InChI Identifier
InChI=1S/C16H27NO6/c1-11(2)14(20)22-12(3)23-15(21)17-10-16(9-13(18)19)7-5-4-6-8-16/h11-12H,4-10H2,1-3H3,(H,17,21)(H,18,19)
InChI KeyTZDUHAJSIBHXDL-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as gamma amino acids and derivatives. These are amino acids having a (-NH2) group attached to the gamma carbon atom.
KingdomOrganic compounds
Super ClassOrganic acids and derivatives
ClassCarboxylic acids and derivatives
Sub ClassAmino acids, peptides, and analogues
Direct ParentGamma amino acids and derivatives
Alternative Parents
Substituents
  • Gamma amino acid or derivatives
  • Dicarboxylic acid or derivatives
  • Carbamic acid ester
  • Carboxylic acid ester
  • Carbonic acid derivative
  • Acetal
  • Carboxylic acid
  • Organic nitrogen compound
  • Organonitrogen compound
  • Organooxygen compound
  • Hydrocarbon derivative
  • Organic oxide
  • Organopnictogen compound
  • Organic oxygen compound
  • Carbonyl group
  • Aliphatic homomonocyclic compound
Molecular FrameworkAliphatic homomonocyclic compounds
External Descriptors
Ontology
Physiological effectNot Available
Disposition
ProcessNot Available
RoleNot Available
Physical Properties
StateNot Available
Experimental Molecular Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
PropertyValueSource
logP2.45ALOGPS
logP2.76ChemAxon
logS-3ALOGPS
pKa (Strongest Acidic)4.35ChemAxon
pKa (Strongest Basic)-7.1ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count4ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area101.93 ŲChemAxon
Rotatable Bond Count9ChemAxon
Refractivity81.69 m³·mol⁻¹ChemAxon
Polarizability34.38 ųChemAxon
Number of Rings1ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DeepCCS[M+H]+181.09630932474
DeepCCS[M-H]-178.73830932474
DeepCCS[M-2H]-211.98430932474
DeepCCS[M+Na]+187.21130932474
AllCCS[M+H]+177.132859911
AllCCS[M+H-H2O]+174.532859911
AllCCS[M+NH4]+179.632859911
AllCCS[M+Na]+180.332859911
AllCCS[M-H]-178.232859911
AllCCS[M+Na-2H]-178.932859911
AllCCS[M+HCOO]-179.932859911

Predicted Retention Times

Underivatized

Chromatographic MethodRetention TimeReference
Predicted by Siyang on May 30, 202212.7521 minutes33406817
Predicted by Siyang using ReTip algorithm on June 8, 20221.38 minutes32390414
Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid2333.8 seconds40023050
Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid227.1 seconds40023050
Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid155.0 seconds40023050
Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid157.4 seconds40023050
RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid140.1 seconds40023050
Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid471.3 seconds40023050
BfG_NTS_RP1 =Agilent Zorbax Eclipse Plus C18 (2.1 mm x 150 mm, 3.5 um) with Water:ACN and 0.1% Formic Acid562.3 seconds40023050
HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate)75.0 seconds40023050
UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid1057.9 seconds40023050
BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid471.6 seconds40023050
UFZ_Phenomenex = Kinetex Core-Shell C18 2.6 um, 3.0 x 100 mm, Phenomenex with Water:MeOH and 0.1% Formic Acid1398.7 seconds40023050
SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid320.4 seconds40023050
RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid387.6 seconds40023050
MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate238.9 seconds40023050
KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA143.7 seconds40023050
Meister zic-pHILIC pH9.3 = Merck SeQuant ZIC-pHILIC column with ACN:Water 5mM NH4Ac pH9.3 and 5mM ammonium acetate in water12.6 seconds40023050

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
Gabapentin enacarbilCC(C)C(=O)OC(C)OC(=O)NCC1(CC(O)=O)CCCCC13136.2Standard polar33892256
Gabapentin enacarbilCC(C)C(=O)OC(C)OC(=O)NCC1(CC(O)=O)CCCCC12047.7Standard non polar33892256
Gabapentin enacarbilCC(C)C(=O)OC(C)OC(=O)NCC1(CC(O)=O)CCCCC12312.4Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
Gabapentin enacarbil,2TMS,isomer #1CC(OC(=O)C(C)C)OC(=O)N(CC1(CC(=O)O[Si](C)(C)C)CCCCC1)[Si](C)(C)C2330.5Semi standard non polar33892256
Gabapentin enacarbil,2TMS,isomer #1CC(OC(=O)C(C)C)OC(=O)N(CC1(CC(=O)O[Si](C)(C)C)CCCCC1)[Si](C)(C)C2315.6Standard non polar33892256
Gabapentin enacarbil,2TMS,isomer #1CC(OC(=O)C(C)C)OC(=O)N(CC1(CC(=O)O[Si](C)(C)C)CCCCC1)[Si](C)(C)C2827.6Standard polar33892256
Gabapentin enacarbil,2TBDMS,isomer #1CC(OC(=O)C(C)C)OC(=O)N(CC1(CC(=O)O[Si](C)(C)C(C)(C)C)CCCCC1)[Si](C)(C)C(C)(C)C2813.2Semi standard non polar33892256
Gabapentin enacarbil,2TBDMS,isomer #1CC(OC(=O)C(C)C)OC(=O)N(CC1(CC(=O)O[Si](C)(C)C(C)(C)C)CCCCC1)[Si](C)(C)C(C)(C)C2701.7Standard non polar33892256
Gabapentin enacarbil,2TBDMS,isomer #1CC(OC(=O)C(C)C)OC(=O)N(CC1(CC(=O)O[Si](C)(C)C(C)(C)C)CCCCC1)[Si](C)(C)C(C)(C)C3049.4Standard polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - Gabapentin enacarbil GC-MS (Non-derivatized) - 70eV, Positivesplash10-006x-9620000000-9b26c179b9f76d59c1b32017-08-28Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Gabapentin enacarbil GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Gabapentin enacarbil GC-MS (TMS_1_1) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Gabapentin enacarbil GC-MS (TMS_1_2) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Gabapentin enacarbil GC-MS (TBDMS_1_1) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Gabapentin enacarbil GC-MS (TBDMS_1_2) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum

MS/MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Gabapentin enacarbil 10V, Positive-QTOFsplash10-00xr-3930000000-5ff0bf78db7a21021ad62017-07-26Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Gabapentin enacarbil 20V, Positive-QTOFsplash10-00di-5910000000-6edc04f089ebe39118ee2017-07-26Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Gabapentin enacarbil 40V, Positive-QTOFsplash10-05fr-4900000000-22476df81442eb5caa2c2017-07-26Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Gabapentin enacarbil 10V, Negative-QTOFsplash10-0002-2910000000-ed48dae697f2bf95eabf2017-07-26Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Gabapentin enacarbil 20V, Negative-QTOFsplash10-0007-7900000000-5eefbe0a7d00980bd21e2017-07-26Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Gabapentin enacarbil 40V, Negative-QTOFsplash10-0006-9700000000-e496fc1ed93bd25fd9b52017-07-26Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Gabapentin enacarbil 10V, Positive-QTOFsplash10-029y-3954000000-f8346aaef4b005c544c82021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Gabapentin enacarbil 20V, Positive-QTOFsplash10-0fef-6910000000-1a7801ca93b86f4311672021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Gabapentin enacarbil 40V, Positive-QTOFsplash10-052f-9400000000-2a83707c167522f67d7e2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Gabapentin enacarbil 10V, Negative-QTOFsplash10-000f-9110000000-07f972f266339845b4c32021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Gabapentin enacarbil 20V, Negative-QTOFsplash10-006x-9800000000-43d4e810ba3856d8ca0f2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Gabapentin enacarbil 40V, Negative-QTOFsplash10-00di-9700000000-920eef9b4a34dd23f5ac2021-10-12Wishart LabView Spectrum
Biological Properties
Cellular LocationsNot Available
Biospecimen Locations
  • Blood
Tissue LocationsNot Available
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedNormal details
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDDB08872
Phenol Explorer Compound IDNot Available
FooDB IDNot Available
KNApSAcK IDNot Available
Chemspider ID8059607
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkGabapentin_enacarbil
METLIN IDNot Available
PubChem Compound9883933
PDB IDNot Available
ChEBI ID68840
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. Barupal DK, Fiehn O: Generating the Blood Exposome Database Using a Comprehensive Text Mining and Database Fusion Approach. Environ Health Perspect. 2019 Sep;127(9):97008. doi: 10.1289/EHP4713. Epub 2019 Sep 26. [PubMed:31557052 ]