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Record Information
Version5.0
StatusDetected but not Quantified
Creation Date2021-09-11 09:49:45 UTC
Update Date2021-09-26 23:04:32 UTC
HMDB IDHMDB0252127
Secondary Accession NumbersNone
Metabolite Identification
Common NameEumelanins
DescriptionEumelanins, also known as trichochrome F, belongs to the class of organic compounds known as benzothiazines. These are organic compounds containing a benzene fused to a thiazine ring (a six-membered ring with four carbon atoms, one nitrogen atom and one sulfur atom). Based on a literature review very few articles have been published on Eumelanins. This compound has been identified in human blood as reported by (PMID: 31557052 ). Eumelanins is not a naturally occurring metabolite and is only found in those individuals exposed to this compound or its derivatives. Technically Eumelanins 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
Trichochrome FMeSH
EumelaninMeSH
Chemical FormulaC23H20N4O8S2
Average Molecular Weight544.55
Monoisotopic Molecular Weight544.072255968
IUPAC Name7-(2-amino-2-carboxyethyl)-2-[7-(2-amino-2-carboxyethyl)-5-oxo-5H-1,4-benzothiazin-2-yl]-5-hydroxy-4H-1,4-benzothiazine-3-carboxylic acid
Traditional Name7-(2-amino-2-carboxyethyl)-2-[7-(2-amino-2-carboxyethyl)-5-oxo-1,4-benzothiazin-2-yl]-5-hydroxy-4H-1,4-benzothiazine-3-carboxylic acid
CAS Registry NumberNot Available
SMILES
NC(CC1=CC(O)=C2NC(C(O)=O)=C(SC2=C1)C1=CN=C2C(=O)C=C(CC(N)C(O)=O)C=C2S1)C(O)=O
InChI Identifier
InChI=1S/C23H20N4O8S2/c24-10(21(30)31)1-8-3-12(28)17-14(5-8)36-16(7-26-17)20-19(23(34)35)27-18-13(29)4-9(6-15(18)37-20)2-11(25)22(32)33/h3-7,10-11,27,29H,1-2,24-25H2,(H,30,31)(H,32,33)(H,34,35)
InChI KeySBZBDWBZQAABFX-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as benzothiazines. These are organic compounds containing a benzene fused to a thiazine ring (a six-membered ring with four carbon atoms, one nitrogen atom and one sulfur atom).
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassBenzothiazines
Sub ClassNot Available
Direct ParentBenzothiazines
Alternative Parents
Substituents
  • Alpha-amino acid
  • Alpha-amino acid or derivatives
  • Benzothiazine
  • Tricarboxylic acid or derivatives
  • Aryl thioether
  • 1-hydroxy-4-unsubstituted benzenoid
  • 1-hydroxy-2-unsubstituted benzenoid
  • Phenol
  • Secondary aliphatic/aromatic amine
  • Aralkylamine
  • Para-thiazine
  • Vinylogous thioester
  • Benzenoid
  • Heteroaromatic compound
  • Thioenolether
  • Amino acid or derivatives
  • Amino acid
  • Azacycle
  • Secondary amine
  • Carboxylic acid derivative
  • Carboxylic acid
  • Enamine
  • Organic oxygen compound
  • Amine
  • Organic oxide
  • Carbonyl group
  • Organic nitrogen compound
  • Primary aliphatic amine
  • Organonitrogen compound
  • Organooxygen compound
  • Hydrocarbon derivative
  • Primary amine
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External DescriptorsNot Available
Ontology
Not AvailableNot 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
logP-1.4ALOGPS
logP-4.8ChemAxon
logS-3.8ALOGPS
pKa (Strongest Acidic)1.33ChemAxon
pKa (Strongest Basic)9.49ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count12ChemAxon
Hydrogen Donor Count7ChemAxon
Polar Surface Area225.63 ŲChemAxon
Rotatable Bond Count8ChemAxon
Refractivity141.82 m³·mol⁻¹ChemAxon
Polarizability54.1 ųChemAxon
Number of Rings4ChemAxon
BioavailabilityNoChemAxon
Rule of FiveNoChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleYesChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DeepCCS[M+H]+203.36830932474
DeepCCS[M-H]-200.97330932474
DeepCCS[M-2H]-233.85630932474
DeepCCS[M+Na]+209.28130932474

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
EumelaninsNC(CC1=CC(O)=C2NC(C(O)=O)=C(SC2=C1)C1=CN=C2C(=O)C=C(CC(N)C(O)=O)C=C2S1)C(O)=O6209.7Standard polar33892256
EumelaninsNC(CC1=CC(O)=C2NC(C(O)=O)=C(SC2=C1)C1=CN=C2C(=O)C=C(CC(N)C(O)=O)C=C2S1)C(O)=O3956.1Standard non polar33892256
EumelaninsNC(CC1=CC(O)=C2NC(C(O)=O)=C(SC2=C1)C1=CN=C2C(=O)C=C(CC(N)C(O)=O)C=C2S1)C(O)=O5897.0Semi standard non polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - Eumelanins GC-MS (TMS_1_1) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eumelanins GC-MS (TMS_1_2) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eumelanins GC-MS (TMS_1_3) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eumelanins GC-MS (TMS_1_4) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eumelanins GC-MS (TMS_1_5) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eumelanins GC-MS (TMS_1_6) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eumelanins GC-MS (TMS_1_7) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eumelanins GC-MS (TMS_2_1) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eumelanins GC-MS (TMS_2_2) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eumelanins GC-MS (TMS_2_3) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eumelanins GC-MS (TMS_2_4) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eumelanins GC-MS (TMS_2_5) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eumelanins GC-MS (TMS_2_6) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eumelanins GC-MS (TMS_2_7) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eumelanins GC-MS (TMS_2_8) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eumelanins GC-MS (TMS_2_9) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eumelanins GC-MS (TMS_2_10) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eumelanins GC-MS (TMS_2_11) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eumelanins GC-MS (TMS_2_12) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eumelanins GC-MS (TMS_2_13) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eumelanins GC-MS (TMS_2_14) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eumelanins GC-MS (TMS_2_15) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eumelanins GC-MS (TMS_2_16) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eumelanins GC-MS (TMS_2_17) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Eumelanins GC-MS (TMS_2_18) - 70eV, PositiveNot Available2021-11-04Wishart LabView Spectrum

MS/MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Eumelanins 10V, Positive-QTOFsplash10-0002-0000980000-70edc3097b7a4d0687ae2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Eumelanins 20V, Positive-QTOFsplash10-0kaj-0000910000-ce8c5d1b38146492b5fa2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Eumelanins 40V, Positive-QTOFsplash10-002b-0007910000-7342745d06c1b423f7472021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Eumelanins 10V, Negative-QTOFsplash10-0006-0000390000-a8536f45830e507407c82021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Eumelanins 20V, Negative-QTOFsplash10-0f8d-0050930000-7b34a91af0e43292f3972021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Eumelanins 40V, Negative-QTOFsplash10-0w9r-0001900000-15097c5dc0462592a22e2021-10-12Wishart LabView Spectrum

NMR Spectra

Spectrum TypeDescriptionDeposition DateSourceView
Predicted 1D NMR13C NMR Spectrum (1D, 100 MHz, D2O, predicted)2021-10-13Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 100 MHz, D2O, predicted)2021-10-13Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 1000 MHz, D2O, predicted)2021-10-13Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 1000 MHz, D2O, predicted)2021-10-13Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 200 MHz, D2O, predicted)2021-10-13Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 200 MHz, D2O, predicted)2021-10-13Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 300 MHz, D2O, predicted)2021-10-13Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 300 MHz, D2O, predicted)2021-10-13Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 400 MHz, D2O, predicted)2021-10-13Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 400 MHz, D2O, predicted)2021-10-13Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 500 MHz, D2O, predicted)2021-10-13Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 500 MHz, D2O, predicted)2021-10-13Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 600 MHz, D2O, predicted)2021-10-13Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 600 MHz, D2O, predicted)2021-10-13Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 700 MHz, D2O, predicted)2021-10-13Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 700 MHz, D2O, predicted)2021-10-13Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 800 MHz, D2O, predicted)2021-10-13Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 800 MHz, D2O, predicted)2021-10-13Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 900 MHz, D2O, predicted)2021-10-13Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 900 MHz, D2O, predicted)2021-10-13Wishart 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 IDNot Available
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound102582077
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 ]