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Record Information
Version5.0
StatusExpected but not Quantified
Creation Date2014-04-11 22:17:16 UTC
Update Date2021-09-14 14:57:12 UTC
HMDB IDHMDB0061661
Secondary Accession Numbers
  • HMDB61661
Metabolite Identification
Common Name9-hydroxyoctadecanoic acid
Description9-hydroxyoctadecanoic acid, also known as 9-hydroxystearate or 18:0(9-OH), belongs to the class of organic compounds known as long-chain fatty acids. These are fatty acids with an aliphatic tail that contains between 13 and 21 carbon atoms. 9-hydroxyoctadecanoic acid is a very hydrophobic molecule, practically insoluble (in water), and relatively neutral.
Structure
Data?1563866216
Synonyms
ValueSource
9-Hydroxystearic acidChEBI
9-HydroxystearateGenerator
9-HydroxyoctadecanoateGenerator
DL-9-Hydroxy stearateHMDB
9-Hydroxystearic acid, (R)-isomerHMDB
9-Hydroxystearic acid, (S)-isomerHMDB
18:0(9-OH)HMDB
9-​hydroxystearic acidHMDB
9-DL-Hydroxystearic acidHMDB
9-hydroxyoctadecanoic acidSMPDB, ChEMBL
Chemical FormulaC18H36O3
Average Molecular Weight300.4766
Monoisotopic Molecular Weight300.266445018
IUPAC Name9-hydroxyoctadecanoic acid
Traditional NameDL-9-hydroxy stearic acid
CAS Registry Number3384-24-5
SMILES
CCCCCCCCCC(O)CCCCCCCC(O)=O
InChI Identifier
InChI=1S/C18H36O3/c1-2-3-4-5-6-8-11-14-17(19)15-12-9-7-10-13-16-18(20)21/h17,19H,2-16H2,1H3,(H,20,21)
InChI KeyRKHXDCVAPIMDMG-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as long-chain fatty acids. These are fatty acids with an aliphatic tail that contains between 13 and 21 carbon atoms.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
ClassFatty Acyls
Sub ClassFatty acids and conjugates
Direct ParentLong-chain fatty acids
Alternative Parents
Substituents
  • Long-chain fatty acid
  • Hydroxy fatty acid
  • Secondary alcohol
  • Monocarboxylic acid or derivatives
  • Carboxylic acid
  • Carboxylic acid derivative
  • Organic oxygen compound
  • Organic oxide
  • Hydrocarbon derivative
  • Organooxygen compound
  • Carbonyl group
  • Alcohol
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External Descriptors
Ontology
Physiological effectNot Available
DispositionNot Available
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
Water Solubility0.0029 g/LALOGPS
logP6.6ALOGPS
logP5.76ChemAxon
logS-5ALOGPS
pKa (Strongest Acidic)4.62ChemAxon
pKa (Strongest Basic)-1.3ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area57.53 ŲChemAxon
Rotatable Bond Count16ChemAxon
Refractivity87.96 m³·mol⁻¹ChemAxon
Polarizability39.4 ųChemAxon
Number of Rings0ChemAxon
BioavailabilityNoChemAxon
Rule of FiveNoChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DarkChem[M+H]+178.30731661259
DarkChem[M-H]-179.92631661259
DeepCCS[M+H]+181.29730932474
DeepCCS[M-H]-177.27830932474
DeepCCS[M-2H]-214.50430932474
DeepCCS[M+Na]+190.38930932474
AllCCS[M+H]+185.932859911
AllCCS[M+H-H2O]+183.032859911
AllCCS[M+NH4]+188.532859911
AllCCS[M+Na]+189.332859911
AllCCS[M-H]-181.032859911
AllCCS[M+Na-2H]-182.232859911
AllCCS[M+HCOO]-183.732859911

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
9-hydroxyoctadecanoic acidCCCCCCCCCC(O)CCCCCCCC(O)=O3527.4Standard polar33892256
9-hydroxyoctadecanoic acidCCCCCCCCCC(O)CCCCCCCC(O)=O2242.8Standard non polar33892256
9-hydroxyoctadecanoic acidCCCCCCCCCC(O)CCCCCCCC(O)=O2360.0Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
9-hydroxyoctadecanoic acid,1TMS,isomer #1CCCCCCCCCC(CCCCCCCC(=O)O)O[Si](C)(C)C2398.2Semi standard non polar33892256
9-hydroxyoctadecanoic acid,1TMS,isomer #2CCCCCCCCCC(O)CCCCCCCC(=O)O[Si](C)(C)C2394.5Semi standard non polar33892256
9-hydroxyoctadecanoic acid,2TMS,isomer #1CCCCCCCCCC(CCCCCCCC(=O)O[Si](C)(C)C)O[Si](C)(C)C2431.9Semi standard non polar33892256
9-hydroxyoctadecanoic acid,1TBDMS,isomer #1CCCCCCCCCC(CCCCCCCC(=O)O)O[Si](C)(C)C(C)(C)C2658.0Semi standard non polar33892256
9-hydroxyoctadecanoic acid,1TBDMS,isomer #2CCCCCCCCCC(O)CCCCCCCC(=O)O[Si](C)(C)C(C)(C)C2652.2Semi standard non polar33892256
9-hydroxyoctadecanoic acid,2TBDMS,isomer #1CCCCCCCCCC(CCCCCCCC(=O)O[Si](C)(C)C(C)(C)C)O[Si](C)(C)C(C)(C)C2919.4Semi standard non polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - 9-hydroxyoctadecanoic acid GC-MS (Non-derivatized) - 70eV, Positivesplash10-0036-5960000000-67d4a3ee725d98ea50792017-09-20Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - 9-hydroxyoctadecanoic acid GC-MS (2 TMS) - 70eV, Positivesplash10-004i-9221100000-40291ebb4fcd287b4f942017-10-06Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - 9-hydroxyoctadecanoic acid 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 - 9-hydroxyoctadecanoic acid 10V, Positive-QTOFsplash10-001i-0091000000-a8b75bfa492bb7b7a6bb2017-10-06Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 9-hydroxyoctadecanoic acid 20V, Positive-QTOFsplash10-00lr-4590000000-707498b5a5d0782fba8a2017-10-06Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 9-hydroxyoctadecanoic acid 40V, Positive-QTOFsplash10-052f-9310000000-d98636c703945e990ce52017-10-06Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 9-hydroxyoctadecanoic acid 10V, Negative-QTOFsplash10-0002-0090000000-9ed230f17ba467cf51172017-10-06Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 9-hydroxyoctadecanoic acid 20V, Negative-QTOFsplash10-001j-0190000000-ad303d7daac63b55897e2017-10-06Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 9-hydroxyoctadecanoic acid 40V, Negative-QTOFsplash10-0a4l-9720000000-2a81d53dd37fec6d66c62017-10-06Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 9-hydroxyoctadecanoic acid 10V, Positive-QTOFsplash10-001i-1192000000-d0d69d9ec9ab6dff6a822021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 9-hydroxyoctadecanoic acid 20V, Positive-QTOFsplash10-05o9-8791000000-82f26033195314948cd32021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 9-hydroxyoctadecanoic acid 40V, Positive-QTOFsplash10-0a4l-9100000000-0733a826b61d567db3822021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 9-hydroxyoctadecanoic acid 10V, Negative-QTOFsplash10-0002-0090000000-e9b39aa68d7e6aa56e302021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 9-hydroxyoctadecanoic acid 20V, Negative-QTOFsplash10-000t-0090000000-64977f103ae09315cd252021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 9-hydroxyoctadecanoic acid 40V, Negative-QTOFsplash10-002f-6690000000-3b12976292afd5ad2c2a2021-09-24Wishart LabView Spectrum
Biological Properties
Cellular LocationsNot Available
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 IDNot Available
KNApSAcK IDNot Available
Chemspider IDNot Available
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound9570127
PDB IDNot Available
ChEBI ID136638
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. 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.
  6. The AOCS Lipid Library [Link]