Record Information
Version1.0
Creation Date2016-07-13 19:47:47 UTC
Update Date2016-07-20 21:03:58 UTC
LmdbLMDB00345
Secondary Accession NumbersNone
Metabolite Identification
Common NamePyridoxal
DescriptionPyridoxal, also known as pyridoxaldehyde, belongs to the class of organic compounds known as pyridoxals and derivatives. Pyridoxals and derivatives are compounds containing a pyridoxal moiety, which consists of a pyridine ring substituted at positions 2,3,4, and 5 by a methyl group, a hydroxyl group, a carbaldehyde group, and a hydroxymethyl group, respectively. The 4-carboxyaldehyde form of vitamin B 6 which is converted to pyridoxal phosphate which is a coenzyme for synthesis of amino acids, neurotransmitters (serotonin, norepinephrine), sphingolipids, aminolevulinic acid. Pyridoxal is a strong basic compound (based on its pKa). Pyridoxal exists in all living species, ranging from bacteria to humans. In humans, pyridoxal is involved in glycine and serine metabolism. Outside of the human body, Pyridoxal is found, on average, in the highest concentration within milk (cow). Pyridoxal has also been detected, but not quantified in, several different foods, such as tarragons, peppermints, jicama, shallots, and dandelions. This could make pyridoxal a potential biomarker for the consumption of these foods. Pyridoxal is a potentially toxic compound. Pyridoxal is the precursor to pyridoxal phosphate.
Structure
Thumb
Synonyms
ValueSource
3-HYDROXY-5-(hydroxymethyl)-2-methylisonicotinaldehydeChEBI
PyridoxaldehydeChEBI
3-Hydroxy-5-(hydroxymethyl)-2-methylpyridine-4-carboxaldehydeHMDB
Chemical FormulaC8H9NO3
Average Molecular Weight167.162
Monoisotopic Molecular Weight167.058243159
IUPAC Name3-hydroxy-5-(hydroxymethyl)-2-methylpyridine-4-carbaldehyde
Traditional Namepyridoxal
CAS Registry Number66-72-8
SMILES
CC1=NC=C(CO)C(C=O)=C1O
InChI Identifier
InChI=1S/C8H9NO3/c1-5-8(12)7(4-11)6(3-10)2-9-5/h2,4,10,12H,3H2,1H3
InChI KeyRADKZDMFGJYCBB-UHFFFAOYSA-N
Chemical Taxonomy
Description belongs to the class of organic compounds known as pyridoxals and derivatives. Pyridoxals and derivatives are compounds containing a pyridoxal moiety, which consists of a pyridine ring substituted at positions 2,3,4, and 5 by a methyl group, a hydroxyl group, a carbaldehyde group, and a hydroxymethyl group, respectively.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassPyridines and derivatives
Sub ClassPyridine carboxaldehydes
Direct ParentPyridoxals and derivatives
Alternative Parents
Substituents
  • Pyridoxal
  • Aryl-aldehyde
  • Hydroxypyridine
  • Methylpyridine
  • Vinylogous acid
  • Heteroaromatic compound
  • Azacycle
  • Hydrocarbon derivative
  • Aldehyde
  • Alcohol
  • Organic oxygen compound
  • Aromatic alcohol
  • Organic nitrogen compound
  • Primary alcohol
  • Organooxygen compound
  • Organonitrogen compound
  • Organopnictogen compound
  • Organic oxide
  • Aromatic heteromonocyclic compound
Molecular FrameworkAromatic heteromonocyclic compounds
External Descriptors
Ontology
StatusDetected but not Quantified
OriginNot Available
BiofunctionNot Available
ApplicationNot Available
Cellular locationsNot Available
Physical Properties
StateNot Available
Experimental Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Predicted Properties
PropertyValueSource
logP0.02ALOGPS
logP0.18ChemAxon
logS-1.2ALOGPS
pKa (Strongest Acidic)7.97ChemAxon
pKa (Strongest Basic)4.11ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count4ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area70.42 ŲChemAxon
Rotatable Bond Count2ChemAxon
Refractivity43.87 m³·mol⁻¹ChemAxon
Polarizability16.28 ųChemAxon
Number of Rings1ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectra
Spectra
Spectrum TypeDescriptionSplash KeyView
GC-MSGC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (Non-derivatized)splash10-00di-2690000000-5d018202be238b10582aSpectrum
GC-MSGC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (Non-derivatized)splash10-0aou-3974000000-8c963fdc714896ad343aSpectrum
GC-MSGC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (Non-derivatized)splash10-001j-0590000000-ed8a55680a0c9fa9cbafSpectrum
GC-MSGC-MS Spectrum - GC-MS (1 MEOX; 2 TMS)splash10-0a4i-5695000000-bd3bb22a5dd4a600cb6cSpectrum
GC-MSGC-MS Spectrum - GC-MS (1 MEOX; 2 TMS)splash10-0aor-5895000000-e55e01ca30d17d2a8a72Spectrum
GC-MSGC-MS Spectrum - GC-MS (Non-derivatized)splash10-0a4i-5695000000-bd3bb22a5dd4a600cb6cSpectrum
GC-MSGC-MS Spectrum - GC-MS (Non-derivatized)splash10-0aor-5895000000-e55e01ca30d17d2a8a72Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-000i-1900000000-56d1f96c5ac868ce42a6Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (2 TMS) - 70eV, Positivesplash10-00fs-6190000000-78d7f54ce0c5338f815fSpectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot AvailableSpectrum
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 10V, Positive (Annotated)splash10-0002-0900000000-4ce3f52baa36006ef4b2Spectrum
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 25V, Positive (Annotated)splash10-00kg-9500000000-658a96f6cda4a96de045Spectrum
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 40V, Positive (Annotated)splash10-0gbc-9000000000-233fc8ab067b0dcd1f14Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 10V, Negativesplash10-014i-0900000000-c49b207cafcf1c21302dSpectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 20V, Negativesplash10-000i-0900000000-cad83f5f123a879fa0bbSpectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 30V, Negativesplash10-0a4i-0900000000-4f12feae0e11a6d9016bSpectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 40V, Negativesplash10-0a4i-2900000000-56fcdbb9b4363c84d2d0Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 50V, Negativesplash10-056r-9400000000-9700c9585f6c540bf007Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 10V, Positivesplash10-0gb9-0900000000-e646a99b0c1521d1c8ddSpectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 20V, Positivesplash10-0udi-0900000000-8fce1a7d8ceb3fced3edSpectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 30V, Positivesplash10-0udl-6900000000-e2fc0eaa17e57d0a2556Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 40V, Positivesplash10-00kf-9200000000-0bda29931f8b6f2fcc77Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 50V, Positivesplash10-014l-9000000000-469c127d1aef4f8a51d7Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QTOF (UPLC Q-Tof Premier, Waters) , Positivesplash10-0udi-2900000000-63ebef5a0818d6a1ccb8Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QTOF (UPLC Q-Tof Premier, Waters) , Negativesplash10-05n0-0900000000-f468a00d88bedc116485Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-014i-0900000000-c49b207cafcf1c21302dSpectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-000i-0900000000-bf0686eb8e3c28c30e85Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-0a4i-0900000000-686848e0f222273e5089Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-0a4i-2900000000-99577e7f4a39e47c5c42Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0uxr-0900000000-7f4ef736d1a810b2e8abSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0udi-0900000000-9c4ead9423b52a47b2feSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0udi-9500000000-aa6a11948622748c8469Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-014i-0900000000-dd6386614990770eaae5Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-000i-0900000000-e9de9bab2598f0316525Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0abc-9300000000-f4bc767c42577b6a1d5fSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
2D NMR[1H,13C] 2D NMR SpectrumNot AvailableSpectrum
Biological Properties
Cellular LocationsNot Available
Biofluid Locations and Tissue Locations
  • Milk
Concentrations
BiofluidStatusValueConditionSpeciesReferenceDetails
MilkDetected but not QuantifiedNot ApplicableNot AvailableBovine details
MilkDetected but not QuantifiedNot ApplicableNot AvailableBovine
    • Kurt J. Boudonck,...
details
DrugBank IDDB00147
HMDB IDHMDB0001545
FooDB IDFDB011169
Phenol Explorer IDNot Available
KNApSAcK IDC00007509
BiGG ID34393
BioCyc IDPYRIDOXAL
METLIN ID6312
PDB IDNot Available
Wikipedia LinkPyridoxal
Chemspider ID1021
ChEBI ID17310
PubChem Compound ID1050
Kegg Compound IDC00250
YMDB IDYMDB00392
ECMDB IDECMDB01545
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General ReferencesNot Available