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Record Information
Version5.0
StatusExpected but not Quantified
Creation Date2009-07-25 00:20:08 UTC
Update Date2022-03-07 02:51:28 UTC
HMDB IDHMDB0013117
Secondary Accession Numbers
  • HMDB13117
Metabolite Identification
Common NameVitamin A2
DescriptionVitamin A2, also known as 3-dehydoretinol or VA2, belongs to the class of organic compounds known as retinoids. These are oxygenated derivatives of 3,7-dimethyl-1-(2,6,6-trimethylcyclohex-1-enyl)nona-1,3,5,7-tetraene and derivatives thereof. Thus, vitamin A2 is considered to be an isoprenoid. Based on a literature review a significant number of articles have been published on Vitamin A2.
Structure
Data?1582753090
Synonyms
ValueSource
(2E,4E,6E,8E)-3,7-Dimethyl-9-(2,6,6-trimethylcyclohexa-1,3-dien-1-yl)nona-2,4,6,8-tetraen-1-olChEBI
3,4-Didehydro-all-trans-retinolChEBI
3,4-Didehydro-retinolChEBI
3-DehydoretinolChEBI
all-trans-3-DehydroretinolChEBI
DehydroretinolChEBI
all-trans-3,4-Didehydro retinolHMDB
3,4-DidehydroretinolHMDB
all-trans-3,4-DidehydroretinolHMDB
VA2HMDB
Vitamin a2, (7-cis)-isomerHMDB
3-DehydroretinolHMDB
Vitamin a2ChEBI
Chemical FormulaC20H28O
Average Molecular Weight284.4357
Monoisotopic Molecular Weight284.214015518
IUPAC Name(2E,4E,6E,8E)-3,7-dimethyl-9-(2,6,6-trimethylcyclohexa-1,3-dien-1-yl)nona-2,4,6,8-tetraen-1-ol
Traditional Namevitamin A 2
CAS Registry Number79-80-1
SMILES
C\C(=C/CO)\C=C\C=C(/C)\C=C\C1=C(C)C=CCC1(C)C
InChI Identifier
InChI=1S/C20H28O/c1-16(8-6-9-17(2)13-15-21)11-12-19-18(3)10-7-14-20(19,4)5/h6-13,21H,14-15H2,1-5H3/b9-6+,12-11+,16-8+,17-13+
InChI KeyXWCYDHJOKKGVHC-OVSJKPMPSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as retinoids. These are oxygenated derivatives of 3,7-dimethyl-1-(2,6,6-trimethylcyclohex-1-enyl)nona-1,3,5,7-tetraene and derivatives thereof.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
ClassPrenol lipids
Sub ClassRetinoids
Direct ParentRetinoids
Alternative Parents
Substituents
  • Retinoid skeleton
  • Diterpenoid
  • Fatty alcohol
  • Fatty acyl
  • Organic oxygen compound
  • Hydrocarbon derivative
  • Primary alcohol
  • Organooxygen compound
  • Alcohol
  • Aliphatic homomonocyclic compound
Molecular FrameworkAliphatic homomonocyclic compounds
External Descriptors
Ontology
Physiological effectNot Available
Disposition
ProcessNot Available
RoleNot Available
Physical Properties
StateSolid
Experimental Molecular Properties
PropertyValueReference
Melting Point< 25 °CNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
PropertyValueSource
Water Solubility0.014 g/LALOGPS
logP5.66ALOGPS
logP4.33ChemAxon
logS-4.3ALOGPS
pKa (Strongest Acidic)16.44ChemAxon
pKa (Strongest Basic)-2.2ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count1ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area20.23 ŲChemAxon
Rotatable Bond Count5ChemAxon
Refractivity99.04 m³·mol⁻¹ChemAxon
Polarizability36.02 ųChemAxon
Number of Rings1ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DarkChem[M+H]+178.00531661259
DarkChem[M-H]-174.31231661259
DeepCCS[M+H]+183.99830932474
DeepCCS[M-H]-181.6430932474
DeepCCS[M-2H]-215.72730932474
DeepCCS[M+Na]+190.95430932474
AllCCS[M+H]+172.132859911
AllCCS[M+H-H2O]+168.732859911
AllCCS[M+NH4]+175.232859911
AllCCS[M+Na]+176.132859911
AllCCS[M-H]-177.032859911
AllCCS[M+Na-2H]-177.432859911
AllCCS[M+HCOO]-177.932859911

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
Vitamin A2C\C(=C/CO)\C=C\C=C(/C)\C=C\C1=C(C)C=CCC1(C)C3251.9Standard polar33892256
Vitamin A2C\C(=C/CO)\C=C\C=C(/C)\C=C\C1=C(C)C=CCC1(C)C2410.8Standard non polar33892256
Vitamin A2C\C(=C/CO)\C=C\C=C(/C)\C=C\C1=C(C)C=CCC1(C)C2359.4Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
Vitamin A2,1TMS,isomer #1CC1=C(/C=C/C(C)=C/C=C/C(C)=C/CO[Si](C)(C)C)C(C)(C)CC=C12616.9Semi standard non polar33892256
Vitamin A2,1TBDMS,isomer #1CC1=C(/C=C/C(C)=C/C=C/C(C)=C/CO[Si](C)(C)C(C)(C)C)C(C)(C)CC=C12813.2Semi standard non polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - Vitamin A2 GC-MS (Non-derivatized) - 70eV, Positivesplash10-014i-2190000000-3b869065c87d36ed50992017-09-01Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Vitamin A2 GC-MS (1 TMS) - 70eV, Positivesplash10-0006-8249000000-a550d49727292f80b9462017-10-06Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Vitamin A2 GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum

MS/MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Vitamin A2 10V, Positive-QTOFsplash10-00kr-1490000000-49ea807dd5aeee7b28382017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Vitamin A2 20V, Positive-QTOFsplash10-015a-4920000000-96a6d30e24b05021a4d02017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Vitamin A2 40V, Positive-QTOFsplash10-0lei-9820000000-418a688bdad32f0880092017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Vitamin A2 10V, Negative-QTOFsplash10-001i-0090000000-b56b2d201cdf5f15c8402017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Vitamin A2 20V, Negative-QTOFsplash10-0ue9-0090000000-f93bb9c048e2429475322017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Vitamin A2 40V, Negative-QTOFsplash10-00kr-4690000000-10339a6c3a7b2054420e2017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Vitamin A2 10V, Negative-QTOFsplash10-0udi-0090000000-219cda37112b6df644da2021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Vitamin A2 20V, Negative-QTOFsplash10-0uei-0190000000-b80f73b4a9625edad0102021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Vitamin A2 40V, Negative-QTOFsplash10-000i-0690000000-008f73bd4d70cae5d8ac2021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Vitamin A2 10V, Positive-QTOFsplash10-01bi-0790000000-16543321cc9076d8847c2021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Vitamin A2 20V, Positive-QTOFsplash10-05g0-1910000000-6a3650fca0f7a58e3cfd2021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Vitamin A2 40V, Positive-QTOFsplash10-05tf-4900000000-b2b2774f095b7867f5672021-09-22Wishart LabView Spectrum
Biological Properties
Cellular Locations
  • Extracellular
  • Membrane
Biospecimen LocationsNot Available
Tissue LocationsNot Available
Pathways
Normal Concentrations
Not Available
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDFDB013830
KNApSAcK IDC00044897
Chemspider ID4940721
KEGG Compound IDNot Available
BioCyc IDCPD-20073
BiGG IDNot Available
Wikipedia LinkDehydroretinal
METLIN IDNot Available
PubChem Compound6436043
PDB IDNot Available
ChEBI ID132246
Food Biomarker OntologyNot Available
VMH IDCE1162
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Simons K, Toomre D: Lipid rafts and signal transduction. Nat Rev Mol Cell Biol. 2000 Oct;1(1):31-9. [PubMed:11413487 ]
  2. Watson AD: Thematic review series: systems biology approaches to metabolic and cardiovascular disorders. Lipidomics: a global approach to lipid analysis in biological systems. J Lipid Res. 2006 Oct;47(10):2101-11. Epub 2006 Aug 10. [PubMed:16902246 ]
  3. Sethi JK, Vidal-Puig AJ: Thematic review series: adipocyte biology. Adipose tissue function and plasticity orchestrate nutritional adaptation. J Lipid Res. 2007 Jun;48(6):1253-62. Epub 2007 Mar 20. [PubMed:17374880 ]
  4. Lingwood D, Simons K: Lipid rafts as a membrane-organizing principle. Science. 2010 Jan 1;327(5961):46-50. doi: 10.1126/science.1174621. [PubMed:20044567 ]
  5. Gunstone, Frank D., John L. Harwood, and Albert J. Dijkstra (2007). The lipid handbook with CD-ROM. CRC Press.