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Record Information
Version5.0
StatusExpected but not Quantified
Creation Date2012-09-11 21:54:28 UTC
Update Date2022-03-07 02:55:02 UTC
HMDB IDHMDB0036738
Secondary Accession Numbers
  • HMDB36738
Metabolite Identification
Common NameLettucenin A
DescriptionLettucenin A belongs to the class of organic compounds known as cycloheptafurans. These are organic heterocyclic compounds containing a cycloheptane derivative fused to a furan. Furan is a five-membered aromatic ring with four carbon atoms and one oxygen atom. Lettucenin A has been detected, but not quantified in, lettuces (Lactuca sativa) and romaine lettuces (Lactuca sativa L. var. longifolia). This could make lettucenin a a potential biomarker for the consumption of these foods. Based on a literature review a small amount of articles have been published on Lettucenin A.
Structure
Data?1563862918
SynonymsNot Available
Chemical FormulaC15H12O3
Average Molecular Weight240.254
Monoisotopic Molecular Weight240.07864425
IUPAC Name6-methyl-9-methylidene-2-oxo-2H,7H,8H,9H-azuleno[4,5-b]furan-3-carbaldehyde
Traditional Name6-methyl-9-methylidene-2-oxo-7H,8H-azuleno[4,5-b]furan-3-carbaldehyde
CAS Registry Number97915-46-3
SMILES
CC1=C2CCC(=C)C2=C2OC(=O)C(C=O)=C2C=C1
InChI Identifier
InChI=1S/C15H12O3/c1-8-3-6-11-12(7-16)15(17)18-14(11)13-9(2)4-5-10(8)13/h3,6-7H,2,4-5H2,1H3
InChI KeyPATCUDSVUMFCMB-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as cycloheptafurans. These are organic heterocyclic compounds containing a cycloheptane derivative fused to a furan. Furan is a five-membered aromatic ring with four carbon atoms and one oxygen atom.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassCycloheptafurans
Sub ClassNot Available
Direct ParentCycloheptafurans
Alternative Parents
Substituents
  • Cycloheptafuran
  • Aryl-aldehyde
  • Heteroaromatic compound
  • Furan
  • Lactone
  • Oxacycle
  • Organic oxygen compound
  • Organic oxide
  • Hydrocarbon derivative
  • Organooxygen compound
  • Aldehyde
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External DescriptorsNot Available
Ontology
Physiological effectNot Available
Disposition
Process
Role
Physical Properties
StateSolid
Experimental Molecular Properties
PropertyValueReference
Melting Point175 - 176 °CNot Available
Boiling PointNot AvailableNot Available
Water Solubility852.8 mg/L @ 25 °C (est)The Good Scents Company Information System
LogPNot AvailableNot Available
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
PropertyValueSource
Water Solubility0.3 g/LALOGPS
logP2.6ALOGPS
logP1.21ChemAxon
logS-2.9ALOGPS
pKa (Strongest Basic)-7.2ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count0ChemAxon
Polar Surface Area43.37 ŲChemAxon
Rotatable Bond Count1ChemAxon
Refractivity70.72 m³·mol⁻¹ChemAxon
Polarizability25.48 ųChemAxon
Number of Rings3ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DarkChem[M+H]+153.3931661259
DarkChem[M-H]-151.7631661259
DeepCCS[M+H]+157.44930932474
DeepCCS[M-H]-155.09130932474
DeepCCS[M-2H]-188.04830932474
DeepCCS[M+Na]+163.54330932474
AllCCS[M+H]+152.532859911
AllCCS[M+H-H2O]+148.532859911
AllCCS[M+NH4]+156.232859911
AllCCS[M+Na]+157.232859911
AllCCS[M-H]-157.132859911
AllCCS[M+Na-2H]-156.532859911
AllCCS[M+HCOO]-155.932859911

Predicted Retention Times

Underivatized

Chromatographic MethodRetention TimeReference
Measured using a Waters Acquity ultraperformance liquid chromatography (UPLC) ethylene-bridged hybrid (BEH) C18 column (100 mm × 2.1 mm; 1.7 μmparticle diameter). Predicted by Afia on May 17, 2022. Predicted by Afia on May 17, 2022.7.65 minutes32390414
Predicted by Siyang on May 30, 202215.6609 minutes33406817
Predicted by Siyang using ReTip algorithm on June 8, 20220.93 minutes32390414
Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid1871.8 seconds40023050
Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid486.9 seconds40023050
Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid190.1 seconds40023050
Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid291.0 seconds40023050
RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid234.1 seconds40023050
Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid617.9 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 Acid781.8 seconds40023050
HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate)120.6 seconds40023050
UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid1337.8 seconds40023050
BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid469.2 seconds40023050
UFZ_Phenomenex = Kinetex Core-Shell C18 2.6 um, 3.0 x 100 mm, Phenomenex with Water:MeOH and 0.1% Formic Acid1481.8 seconds40023050
SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid409.9 seconds40023050
RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid418.8 seconds40023050
MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate435.7 seconds40023050
KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA454.0 seconds40023050
Meister zic-pHILIC pH9.3 = Merck SeQuant ZIC-pHILIC column with ACN:Water 5mM NH4Ac pH9.3 and 5mM ammonium acetate in water26.3 seconds40023050

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
Lettucenin ACC1=C2CCC(=C)C2=C2OC(=O)C(C=O)=C2C=C12843.4Standard polar33892256
Lettucenin ACC1=C2CCC(=C)C2=C2OC(=O)C(C=O)=C2C=C12227.1Standard non polar33892256
Lettucenin ACC1=C2CCC(=C)C2=C2OC(=O)C(C=O)=C2C=C12436.2Semi standard non polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - Lettucenin A GC-MS (Non-derivatized) - 70eV, Positivesplash10-03di-0590000000-bd5e07314e95989744382017-09-01Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Lettucenin A GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Lettucenin A 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 - Lettucenin A 10V, Positive-QTOFsplash10-0006-0090000000-1a929286d10e341e8c7a2016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Lettucenin A 20V, Positive-QTOFsplash10-0006-0690000000-5b95d271fceefa1219bf2016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Lettucenin A 40V, Positive-QTOFsplash10-0gbc-3900000000-69e2312015f2721c9a7a2016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Lettucenin A 10V, Negative-QTOFsplash10-000i-0090000000-27996a84f77db75179262016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Lettucenin A 20V, Negative-QTOFsplash10-000i-0290000000-c96e565799c498b125642016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Lettucenin A 40V, Negative-QTOFsplash10-014i-1900000000-387fe0ef6f6c911c35962016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Lettucenin A 10V, Negative-QTOFsplash10-000i-0090000000-68ba9ba0c5a355ceefe42021-09-21Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Lettucenin A 20V, Negative-QTOFsplash10-01p9-0090000000-55248e35dfc1da0377412021-09-21Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Lettucenin A 40V, Negative-QTOFsplash10-05mo-0950000000-6ed4031fd727a817dba72021-09-21Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Lettucenin A 10V, Positive-QTOFsplash10-0006-0090000000-250f7f03bbf18e8fd5e62021-09-25Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Lettucenin A 20V, Positive-QTOFsplash10-0006-0090000000-55f8da2cb86438a6ef5b2021-09-25Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Lettucenin A 40V, Positive-QTOFsplash10-0gbi-1920000000-67126ca0cc7382fbb3702021-09-25Wishart 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 IDFDB015675
KNApSAcK IDC00020829
Chemspider ID155799
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound178999
PDB IDNot Available
ChEBI IDNot Available
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB IDNot Available
Good Scents IDrw1856841
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. (). Yannai, Shmuel. (2004) Dictionary of food compounds with CD-ROM: Additives, flavors, and ingredients. Boca Raton: Chapman & Hall/CRC.. .
  6. Gunstone, Frank D., John L. Harwood, and Albert J. Dijkstra (2007). The lipid handbook with CD-ROM. CRC Press.