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Record Information
Version5.0
StatusDetected but not Quantified
Creation Date2021-09-11 03:42:37 UTC
Update Date2021-10-01 19:42:26 UTC
HMDB IDHMDB0249207
Secondary Accession NumbersNone
Metabolite Identification
Common NameBilin
DescriptionBilin belongs to the class of organic compounds known as tetrapyrroles and derivatives. These are polycyclic aromatic compounds containing four pyrrole rings joined by one-carbon units linking position 2 of one pyrrole ring to position 5 of the next. Based on a literature review a significant number of articles have been published on Bilin. This compound has been identified in human blood as reported by (PMID: 31557052 ). Bilin is not a naturally occurring metabolite and is only found in those individuals exposed to this compound or its derivatives. Technically Bilin 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
SynonymsNot Available
Chemical FormulaC19H14N4
Average Molecular Weight298.349
Monoisotopic Molecular Weight298.121846467
IUPAC Name5-[(2H-pyrrol-2-ylidene)methyl]-2-({5-[(2H-pyrrol-2-ylidene)methyl]-1H-pyrrol-2-yl}methylidene)-2H-pyrrole
Traditional Name2-(pyrrol-2-ylidenemethyl)-5-{[5-(pyrrol-2-ylidenemethyl)-1H-pyrrol-2-yl]methylidene}pyrrole
CAS Registry NumberNot Available
SMILES
N1C(C=C2C=CC=N2)=CC=C1C=C1C=CC(C=C2C=CC=N2)=N1
InChI Identifier
InChI=1S/C19H14N4/c1-3-14(20-9-1)11-16-5-7-18(22-16)13-19-8-6-17(23-19)12-15-4-2-10-21-15/h1-13,22H
InChI KeyPPRBOEHFGAHFGC-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as tetrapyrroles and derivatives. These are polycyclic aromatic compounds containing four pyrrole rings joined by one-carbon units linking position 2 of one pyrrole ring to position 5 of the next.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassTetrapyrroles and derivatives
Sub ClassNot Available
Direct ParentTetrapyrroles and derivatives
Alternative Parents
Substituents
  • Tetrapyrrole skeleton
  • Dipyrrin
  • Substituted pyrrole
  • Heteroaromatic compound
  • Pyrrole
  • Ketimine
  • Azacycle
  • Organic 1,3-dipolar compound
  • Propargyl-type 1,3-dipolar organic compound
  • Organic nitrogen compound
  • Organopnictogen compound
  • Hydrocarbon derivative
  • Organonitrogen compound
  • Imine
  • Aromatic heteromonocyclic compound
Molecular FrameworkAromatic heteromonocyclic compounds
External Descriptors
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
logP3.68ALOGPS
logP1.66ChemAxon
logS-4.7ALOGPS
pKa (Strongest Acidic)15.08ChemAxon
pKa (Strongest Basic)8.52ChemAxon
Physiological Charge2ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area52.87 ŲChemAxon
Rotatable Bond Count3ChemAxon
Refractivity100.95 m³·mol⁻¹ChemAxon
Polarizability33.33 ųChemAxon
Number of Rings4ChemAxon
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]+166.83130932474
DeepCCS[M-H]-164.47330932474
DeepCCS[M-2H]-198.00830932474
DeepCCS[M+Na]+173.23530932474
AllCCS[M+H]+180.232859911
AllCCS[M+H-H2O]+176.332859911
AllCCS[M+NH4]+183.832859911
AllCCS[M+Na]+184.932859911
AllCCS[M-H]-179.432859911
AllCCS[M+Na-2H]-179.232859911
AllCCS[M+HCOO]-179.132859911

Predicted Retention Times

Underivatized

Chromatographic MethodRetention TimeReference
Predicted by Siyang on May 30, 202213.0979 minutes33406817
Predicted by Siyang using ReTip algorithm on June 8, 20221.69 minutes32390414
Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid2327.0 seconds40023050
Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid324.1 seconds40023050
Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid151.3 seconds40023050
Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid201.7 seconds40023050
RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid168.1 seconds40023050
Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid420.9 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 Acid435.9 seconds40023050
HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate)125.3 seconds40023050
UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid1330.8 seconds40023050
BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid416.0 seconds40023050
UFZ_Phenomenex = Kinetex Core-Shell C18 2.6 um, 3.0 x 100 mm, Phenomenex with Water:MeOH and 0.1% Formic Acid1204.6 seconds40023050
SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid421.6 seconds40023050
RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid287.0 seconds40023050
MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate382.1 seconds40023050
KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA358.4 seconds40023050
Meister zic-pHILIC pH9.3 = Merck SeQuant ZIC-pHILIC column with ACN:Water 5mM NH4Ac pH9.3 and 5mM ammonium acetate in water7.9 seconds40023050

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
BilinN1C(C=C2C=CC=N2)=CC=C1C=C1C=CC(C=C2C=CC=N2)=N14467.6Standard polar33892256
BilinN1C(C=C2C=CC=N2)=CC=C1C=C1C=CC(C=C2C=CC=N2)=N13576.8Standard non polar33892256
BilinN1C(C=C2C=CC=N2)=CC=C1C=C1C=CC(C=C2C=CC=N2)=N13524.2Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
Bilin,1TMS,isomer #1C[Si](C)(C)N1C(C=C2C=CC=N2)=CC=C1C=C1C=CC(C=C2C=CC=N2)=N13580.8Semi standard non polar33892256
Bilin,1TMS,isomer #1C[Si](C)(C)N1C(C=C2C=CC=N2)=CC=C1C=C1C=CC(C=C2C=CC=N2)=N13209.9Standard non polar33892256
Bilin,1TMS,isomer #1C[Si](C)(C)N1C(C=C2C=CC=N2)=CC=C1C=C1C=CC(C=C2C=CC=N2)=N14253.9Standard polar33892256
Bilin,1TBDMS,isomer #1CC(C)(C)[Si](C)(C)N1C(C=C2C=CC=N2)=CC=C1C=C1C=CC(C=C2C=CC=N2)=N13706.9Semi standard non polar33892256
Bilin,1TBDMS,isomer #1CC(C)(C)[Si](C)(C)N1C(C=C2C=CC=N2)=CC=C1C=C1C=CC(C=C2C=CC=N2)=N13390.5Standard non polar33892256
Bilin,1TBDMS,isomer #1CC(C)(C)[Si](C)(C)N1C(C=C2C=CC=N2)=CC=C1C=C1C=CC(C=C2C=CC=N2)=N14371.0Standard polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - Bilin GC-MS (Non-derivatized) - 70eV, Positivesplash10-000t-2690000000-57409f605439fcc87c832021-09-23Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Bilin 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 - Bilin 10V, Positive-QTOFsplash10-0002-0090000000-e59d46dadb94a13b52612021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Bilin 20V, Positive-QTOFsplash10-0002-0090000000-76dd062bd592a8528d282021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Bilin 40V, Positive-QTOFsplash10-00di-0090000000-028e3f6720730d65748c2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Bilin 10V, Negative-QTOFsplash10-0002-0090000000-9022dcd8cc9c89674bc82021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Bilin 20V, Negative-QTOFsplash10-0002-0090000000-da3d4c8b446a4ba495972021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Bilin 40V, Negative-QTOFsplash10-000t-0490000000-0cb2654601af6d55eae92021-10-12Wishart 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 ID5256808
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkBilin
METLIN IDNot Available
PubChem Compound6857471
PDB IDNot Available
ChEBI ID35798
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 ]

Enzymes

General function:
Not Available
Specific function:
APOD occurs in the macromolecular complex with lecithin-cholesterol acyltransferase. It is probably involved in the transport and binding of bilin. Appears to be able to transport a variety of ligands in a number of different contexts.
Gene Name:
APOD
Uniprot ID:
P05090
Molecular weight:
21275.37