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Record Information
Version5.0
StatusDetected but not Quantified
Creation Date2021-09-11 07:23:09 UTC
Update Date2021-09-26 23:01:49 UTC
HMDB IDHMDB0250382
Secondary Accession NumbersNone
Metabolite Identification
Common NameCynisin
Description10-(hydroxymethyl)-6-methyl-3-methylidene-2-oxo-2H,3H,3aH,4H,5H,8H,9H,11aH-cyclodeca[b]furan-4-yl 3,4-dihydroxy-2-methylidenebutanoate belongs to the class of organic compounds known as germacranolides and derivatives. These are sesquiterpene lactones with a structure based on the germacranolide skeleton, characterized by a gamma lactone fused to a 1,7-dimethylcyclodec-1-ene moiety. Based on a literature review very few articles have been published on 10-(hydroxymethyl)-6-methyl-3-methylidene-2-oxo-2H,3H,3aH,4H,5H,8H,9H,11aH-cyclodeca[b]furan-4-yl 3,4-dihydroxy-2-methylidenebutanoate. This compound has been identified in human blood as reported by (PMID: 31557052 ). Cynisin is not a naturally occurring metabolite and is only found in those individuals exposed to this compound or its derivatives. Technically Cynisin 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
10-(Hydroxymethyl)-6-methyl-3-methylidene-2-oxo-2H,3H,3ah,4H,5H,8H,9H,11ah-cyclodeca[b]furan-4-yl 3,4-dihydroxy-2-methylidenebutanoic acidGenerator
Chemical FormulaC20H26O7
Average Molecular Weight378.421
Monoisotopic Molecular Weight378.167853177
IUPAC Name10-(hydroxymethyl)-6-methyl-3-methylidene-2-oxo-2H,3H,3aH,4H,5H,8H,9H,11aH-cyclodeca[b]furan-4-yl 3,4-dihydroxy-2-methylidenebutanoate
Traditional Namecnicin
CAS Registry NumberNot Available
SMILES
CC1=CCCC(CO)=CC2OC(=O)C(=C)C2C(C1)OC(=O)C(=C)C(O)CO
InChI Identifier
InChI=1S/C20H26O7/c1-11-5-4-6-14(9-21)8-17-18(13(3)20(25)27-17)16(7-11)26-19(24)12(2)15(23)10-22/h5,8,15-18,21-23H,2-4,6-7,9-10H2,1H3
InChI KeyZTDFZLVUIVPZDU-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as germacranolides and derivatives. These are sesquiterpene lactones with a structure based on the germacranolide skeleton, characterized by a gamma lactone fused to a 1,7-dimethylcyclodec-1-ene moiety.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
ClassPrenol lipids
Sub ClassTerpene lactones
Direct ParentGermacranolides and derivatives
Alternative Parents
Substituents
  • Germacranolide
  • Germacrane sesquiterpenoid
  • Sesquiterpenoid
  • Beta-hydroxy acid
  • Fatty acid ester
  • Dicarboxylic acid or derivatives
  • Gamma butyrolactone
  • Fatty acyl
  • Hydroxy acid
  • Alpha,beta-unsaturated carboxylic ester
  • Enoate ester
  • Tetrahydrofuran
  • Lactone
  • Carboxylic acid ester
  • Secondary alcohol
  • Organoheterocyclic compound
  • Oxacycle
  • Carboxylic acid derivative
  • Organooxygen compound
  • Alcohol
  • Hydrocarbon derivative
  • Organic oxide
  • Carbonyl group
  • Primary alcohol
  • Organic oxygen compound
  • Aliphatic heteropolycyclic compound
Molecular FrameworkAliphatic heteropolycyclic compounds
External DescriptorsNot Available
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
logP0.96ALOGPS
logP1.11ChemAxon
logS-2.5ALOGPS
pKa (Strongest Acidic)13.52ChemAxon
pKa (Strongest Basic)-2.7ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count5ChemAxon
Hydrogen Donor Count3ChemAxon
Polar Surface Area113.29 ŲChemAxon
Rotatable Bond Count6ChemAxon
Refractivity99.19 m³·mol⁻¹ChemAxon
Polarizability38.22 ųChemAxon
Number of Rings2ChemAxon
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]+191.93230932474
DeepCCS[M-H]-189.4730932474
DeepCCS[M-2H]-224.13630932474
DeepCCS[M+Na]+200.42730932474
AllCCS[M+H]+191.532859911
AllCCS[M+H-H2O]+188.932859911
AllCCS[M+NH4]+193.932859911
AllCCS[M+Na]+194.632859911
AllCCS[M-H]-188.632859911
AllCCS[M+Na-2H]-189.232859911
AllCCS[M+HCOO]-189.932859911

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
CynisinCC1=CCCC(CO)=CC2OC(=O)C(=C)C2C(C1)OC(=O)C(=C)C(O)CO3583.5Standard polar33892256
CynisinCC1=CCCC(CO)=CC2OC(=O)C(=C)C2C(C1)OC(=O)C(=C)C(O)CO2797.5Standard non polar33892256
CynisinCC1=CCCC(CO)=CC2OC(=O)C(=C)C2C(C1)OC(=O)C(=C)C(O)CO3059.5Semi standard non polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - Cynisin GC-MS (Non-derivatized) - 70eV, Positivesplash10-02t9-9506000000-cb1bf13483d7cca033c22021-09-24Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Cynisin GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Cynisin GC-MS (TMS_1_1) - 70eV, PositiveNot Available2021-11-03Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Cynisin GC-MS (TMS_1_2) - 70eV, PositiveNot Available2021-11-03Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Cynisin GC-MS (TMS_1_3) - 70eV, PositiveNot Available2021-11-03Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Cynisin GC-MS (TMS_2_1) - 70eV, PositiveNot Available2021-11-03Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Cynisin GC-MS (TMS_2_2) - 70eV, PositiveNot Available2021-11-03Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Cynisin GC-MS (TMS_2_3) - 70eV, PositiveNot Available2021-11-03Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Cynisin GC-MS (TMS_3_1) - 70eV, PositiveNot Available2021-11-03Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Cynisin GC-MS (TBDMS_1_1) - 70eV, PositiveNot Available2021-11-03Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Cynisin GC-MS (TBDMS_1_2) - 70eV, PositiveNot Available2021-11-03Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Cynisin GC-MS (TBDMS_1_3) - 70eV, PositiveNot Available2021-11-03Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Cynisin GC-MS (TBDMS_2_1) - 70eV, PositiveNot Available2021-11-03Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Cynisin GC-MS (TBDMS_2_2) - 70eV, PositiveNot Available2021-11-03Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Cynisin GC-MS (TBDMS_2_3) - 70eV, PositiveNot Available2021-11-03Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Cynisin GC-MS (TBDMS_3_1) - 70eV, PositiveNot Available2021-11-03Wishart LabView Spectrum

MS/MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Cynisin 10V, Positive-QTOFsplash10-0002-0091000000-5e45590da2f464549b242021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Cynisin 20V, Positive-QTOFsplash10-00kb-1090000000-09540ca7355acd94ff012021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Cynisin 40V, Positive-QTOFsplash10-01r2-3290000000-367f71f46bed9c7df8962021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Cynisin 10V, Negative-QTOFsplash10-03fr-1925000000-14e00f510f7893bf4bd62021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Cynisin 20V, Negative-QTOFsplash10-0avj-9240000000-6ceed9dbec9aeb5952472021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Cynisin 40V, Negative-QTOFsplash10-066r-4090000000-eb8538532c9f1cf08d492021-10-12Wishart 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 IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDNot Available
KNApSAcK IDNot Available
Chemspider ID82329
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound91176
PDB IDNot Available
ChEBI IDNot Available
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 ]