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Record Information
Version5.0
StatusDetected and Quantified
Creation Date2005-11-16 15:48:42 UTC
Update Date2021-09-07 16:45:30 UTC
HMDB IDHMDB0001491
Secondary Accession Numbers
  • HMDB01491
Metabolite Identification
Common NamePyridoxal 5'-phosphate
DescriptionPyridoxal phosphate, also known as PLP, pyridoxal 5'-phosphate or P5P, is the active form of vitamin B6. It is a coenzyme in a variety of enzymatic reactions. Pyridoxal 5'-phosphate 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. Pyridoxal 5'-phosphate is a drug which is used for nutritional supplementation and for treating dietary shortage or imbalance. Pyridoxal 5'-phosphate exists in all living species, ranging from bacteria to humans. In humans, pyridoxal 5'-phosphate is involved in glycine and serine metabolism. Outside of the human body, pyridoxal 5'-phosphate is found, on average, in the highest concentration within cow milk. Pyridoxal 5'-phosphate has also been detected, but not quantified in several different foods, such as soursops, italian sweet red peppers, muscadine grapes, european plums, and blackcurrants. Pyridoxal 5'-phosphate, with regard to humans, has been found to be associated with several diseases such as epilepsy, early-onset, vitamin B6-dependent, odontohypophosphatasia, pyridoxamine 5-prime-phosphate oxidase deficiency, and hypophosphatasia. Pyridoxal 5'-phosphate has also been linked to the inborn metabolic disorder celiac disease.
Structure
Data?1600449833
Synonyms
ValueSource
3-Hydroxy-2-methyl-5-[(phosphonooxy)methyl]-4-pyridinecarboxaldehydeChEBI
3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde 5-phosphateChEBI
CodecarboxylaseChEBI
Phosphoric acid mono-(4-formyl-5-hydroxy-6-methyl-pyridin-3-ylmethyl) esterChEBI
PLPChEBI
Pyridoxal 5'-(dihydrogen phosphate)ChEBI
Pyridoxal 5-monophosphoric acid esterChEBI
Pyridoxal 5-phosphateChEBI
Pyridoxal phosphateChEBI
PYRIDOXAL-5'-phosphATEChEBI
3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde 5-phosphoric acidGenerator
Phosphate mono-(4-formyl-5-hydroxy-6-methyl-pyridin-3-ylmethyl) esterGenerator
Pyridoxal 5'-(dihydrogen phosphoric acid)Generator
Pyridoxal 5-monophosphate esterGenerator
Pyridoxal 5-phosphoric acidGenerator
Pyridoxal phosphoric acidGenerator
PYRIDOXAL-5'-phosphoric acidGenerator
Pyridoxal 5'-phosphoric acidGenerator
Apolon b6HMDB
BiosechsHMDB
Coenzyme b6HMDB
HairoxalHMDB
Hexermin-pHMDB
Hi-pyridoxinHMDB
HiadelonHMDB
HimitanHMDB
PAL-pHMDB
PhosphopyridoxalHMDB
Phosphopyridoxal coenzymeHMDB
PidopidonHMDB
PiodelHMDB
PydoxalHMDB
Pyridoxal pHMDB
Pyridoxal-pHMDB
Pyridoxyl phosphateHMDB
PyromijinHMDB
SechvitanHMDB
Vitahexin-pHMDB
VitazechsHMDB
Phosphate, pyridoxalHMDB
Pyridoxal 5 phosphateHMDB
Chemical FormulaC8H10NO6P
Average Molecular Weight247.1419
Monoisotopic Molecular Weight247.024573569
IUPAC Name[(4-formyl-5-hydroxy-6-methylpyridin-3-yl)methoxy]phosphonic acid
Traditional Namepyridoxal phosphate
CAS Registry Number54-47-7
SMILES
CC1=NC=C(COP(O)(O)=O)C(C=O)=C1O
InChI Identifier
InChI=1S/C8H10NO6P/c1-5-8(11)7(3-10)6(2-9-5)4-15-16(12,13)14/h2-3,11H,4H2,1H3,(H2,12,13,14)
InChI KeyNGVDGCNFYWLIFO-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
  • Monoalkyl phosphate
  • Hydroxypyridine
  • Methylpyridine
  • Organic phosphoric acid derivative
  • Phosphoric acid ester
  • Alkyl phosphate
  • Vinylogous acid
  • Heteroaromatic compound
  • Azacycle
  • Organopnictogen compound
  • Aldehyde
  • Organic oxygen compound
  • Organic nitrogen compound
  • Organooxygen compound
  • Organonitrogen compound
  • Hydrocarbon derivative
  • Organic oxide
  • Aromatic heteromonocyclic compound
Molecular FrameworkAromatic heteromonocyclic compounds
External Descriptors
Ontology
Physiological effectNot Available
Disposition
Biological locationRoute of exposureSource
Process
Naturally occurring process
Role
Physical Properties
StateSolid
Experimental Molecular Properties
PropertyValueReference
Melting Point255 °CNot Available
Boiling PointNot AvailableNot Available
Water Solubility28 mg/mLNot Available
LogPNot AvailableNot Available
Experimental Chromatographic Properties

Experimental Collision Cross Sections

Adduct TypeData SourceCCS Value (Å2)Reference
[M-H]-Baker150.53830932474
[M-H]-MetCCS_train_neg146.33630932474
[M+H]+Baker154.76130932474
[M+H]+MetCCS_train_pos151.40430932474
[M-H]-Not Available148.3http://allccs.zhulab.cn/database/detail?ID=AllCCS00000339
[M+H]+Not Available152.3http://allccs.zhulab.cn/database/detail?ID=AllCCS00000339
Predicted Molecular Properties
PropertyValueSource
Water Solubility5.7 g/LALOGPS
logP-0.55ALOGPS
logP-2.1ChemAxon
logS-1.6ALOGPS
pKa (Strongest Acidic)1.68ChemAxon
pKa (Strongest Basic)4.11ChemAxon
Physiological Charge-2ChemAxon
Hydrogen Acceptor Count6ChemAxon
Hydrogen Donor Count3ChemAxon
Polar Surface Area116.95 ŲChemAxon
Rotatable Bond Count4ChemAxon
Refractivity54.75 m³·mol⁻¹ChemAxon
Polarizability20.9 ųChemAxon
Number of Rings1ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DarkChem[M+H]+152.84931661259
DarkChem[M-H]-149.5831661259
AllCCS[M+H]+152.94132859911
AllCCS[M-H]-147.7132859911
DeepCCS[M+H]+147.64330932474
DeepCCS[M-H]-145.28530932474
DeepCCS[M-2H]-179.61530932474
DeepCCS[M+Na]+154.76630932474
AllCCS[M+H]+152.932859911
AllCCS[M+H-H2O]+149.232859911
AllCCS[M+NH4]+156.432859911
AllCCS[M+Na]+157.432859911
AllCCS[M-H]-147.732859911
AllCCS[M+Na-2H]-148.132859911
AllCCS[M+HCOO]-148.632859911

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
Pyridoxal 5'-phosphateCC1=NC=C(COP(O)(O)=O)C(C=O)=C1O2937.5Standard polar33892256
Pyridoxal 5'-phosphateCC1=NC=C(COP(O)(O)=O)C(C=O)=C1O1916.5Standard non polar33892256
Pyridoxal 5'-phosphateCC1=NC=C(COP(O)(O)=O)C(C=O)=C1O2191.2Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
Pyridoxal 5'-phosphate,1TMS,isomer #1CC1=NC=C(COP(=O)(O)O)C(C=O)=C1O[Si](C)(C)C2203.8Semi standard non polar33892256
Pyridoxal 5'-phosphate,1TMS,isomer #2CC1=NC=C(COP(=O)(O)O[Si](C)(C)C)C(C=O)=C1O2183.0Semi standard non polar33892256
Pyridoxal 5'-phosphate,2TMS,isomer #1CC1=NC=C(COP(=O)(O)O[Si](C)(C)C)C(C=O)=C1O[Si](C)(C)C2256.0Semi standard non polar33892256
Pyridoxal 5'-phosphate,2TMS,isomer #1CC1=NC=C(COP(=O)(O)O[Si](C)(C)C)C(C=O)=C1O[Si](C)(C)C2134.1Standard non polar33892256
Pyridoxal 5'-phosphate,2TMS,isomer #1CC1=NC=C(COP(=O)(O)O[Si](C)(C)C)C(C=O)=C1O[Si](C)(C)C2835.0Standard polar33892256
Pyridoxal 5'-phosphate,2TMS,isomer #2CC1=NC=C(COP(=O)(O[Si](C)(C)C)O[Si](C)(C)C)C(C=O)=C1O2195.9Semi standard non polar33892256
Pyridoxal 5'-phosphate,2TMS,isomer #2CC1=NC=C(COP(=O)(O[Si](C)(C)C)O[Si](C)(C)C)C(C=O)=C1O2144.7Standard non polar33892256
Pyridoxal 5'-phosphate,2TMS,isomer #2CC1=NC=C(COP(=O)(O[Si](C)(C)C)O[Si](C)(C)C)C(C=O)=C1O2744.2Standard polar33892256
Pyridoxal 5'-phosphate,3TMS,isomer #1CC1=NC=C(COP(=O)(O[Si](C)(C)C)O[Si](C)(C)C)C(C=O)=C1O[Si](C)(C)C2270.7Semi standard non polar33892256
Pyridoxal 5'-phosphate,3TMS,isomer #1CC1=NC=C(COP(=O)(O[Si](C)(C)C)O[Si](C)(C)C)C(C=O)=C1O[Si](C)(C)C2215.1Standard non polar33892256
Pyridoxal 5'-phosphate,3TMS,isomer #1CC1=NC=C(COP(=O)(O[Si](C)(C)C)O[Si](C)(C)C)C(C=O)=C1O[Si](C)(C)C2487.5Standard polar33892256
Pyridoxal 5'-phosphate,1TBDMS,isomer #1CC1=NC=C(COP(=O)(O)O)C(C=O)=C1O[Si](C)(C)C(C)(C)C2478.3Semi standard non polar33892256
Pyridoxal 5'-phosphate,1TBDMS,isomer #2CC1=NC=C(COP(=O)(O)O[Si](C)(C)C(C)(C)C)C(C=O)=C1O2420.3Semi standard non polar33892256
Pyridoxal 5'-phosphate,2TBDMS,isomer #1CC1=NC=C(COP(=O)(O)O[Si](C)(C)C(C)(C)C)C(C=O)=C1O[Si](C)(C)C(C)(C)C2696.5Semi standard non polar33892256
Pyridoxal 5'-phosphate,2TBDMS,isomer #1CC1=NC=C(COP(=O)(O)O[Si](C)(C)C(C)(C)C)C(C=O)=C1O[Si](C)(C)C(C)(C)C2562.4Standard non polar33892256
Pyridoxal 5'-phosphate,2TBDMS,isomer #1CC1=NC=C(COP(=O)(O)O[Si](C)(C)C(C)(C)C)C(C=O)=C1O[Si](C)(C)C(C)(C)C3020.2Standard polar33892256
Pyridoxal 5'-phosphate,2TBDMS,isomer #2CC1=NC=C(COP(=O)(O[Si](C)(C)C(C)(C)C)O[Si](C)(C)C(C)(C)C)C(C=O)=C1O2643.7Semi standard non polar33892256
Pyridoxal 5'-phosphate,2TBDMS,isomer #2CC1=NC=C(COP(=O)(O[Si](C)(C)C(C)(C)C)O[Si](C)(C)C(C)(C)C)C(C=O)=C1O2552.0Standard non polar33892256
Pyridoxal 5'-phosphate,2TBDMS,isomer #2CC1=NC=C(COP(=O)(O[Si](C)(C)C(C)(C)C)O[Si](C)(C)C(C)(C)C)C(C=O)=C1O2949.6Standard polar33892256
Pyridoxal 5'-phosphate,3TBDMS,isomer #1CC1=NC=C(COP(=O)(O[Si](C)(C)C(C)(C)C)O[Si](C)(C)C(C)(C)C)C(C=O)=C1O[Si](C)(C)C(C)(C)C2891.0Semi standard non polar33892256
Pyridoxal 5'-phosphate,3TBDMS,isomer #1CC1=NC=C(COP(=O)(O[Si](C)(C)C(C)(C)C)O[Si](C)(C)C(C)(C)C)C(C=O)=C1O[Si](C)(C)C(C)(C)C2755.5Standard non polar33892256
Pyridoxal 5'-phosphate,3TBDMS,isomer #1CC1=NC=C(COP(=O)(O[Si](C)(C)C(C)(C)C)O[Si](C)(C)C(C)(C)C)C(C=O)=C1O[Si](C)(C)C(C)(C)C2790.4Standard polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Experimental GC-MSGC-MS Spectrum - Pyridoxal 5'-phosphate GC-MS (1 MEOX; 3 TMS)splash10-0gb9-2690000000-c9bacb7e657461e284072014-06-16HMDB team, MONA, MassBankView Spectrum
Experimental GC-MSGC-MS Spectrum - Pyridoxal 5'-phosphate GC-MS (Non-derivatized)splash10-0gb9-2690000000-c9bacb7e657461e284072017-09-12HMDB team, MONA, MassBankView Spectrum
Experimental GC-MSGC-MS Spectrum - Pyridoxal 5'-phosphate GC-EI-TOF (Non-derivatized)splash10-004j-0910000000-0408f3957221fc9882cd2017-09-12HMDB team, MONA, MassBankView Spectrum
Experimental GC-MSGC-MS Spectrum - Pyridoxal 5'-phosphate GC-EI-TOF (Non-derivatized)splash10-0gb9-1790000000-b01115fa8b4cfd3612c72017-09-12HMDB team, MONA, MassBankView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Pyridoxal 5'-phosphate GC-MS (Non-derivatized) - 70eV, Positivesplash10-0002-9520000000-bfd574b2e5355694902a2016-09-22Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Pyridoxal 5'-phosphate GC-MS (1 TMS) - 70eV, Positivesplash10-006t-9152000000-26c9f6311956633229862017-10-06Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Pyridoxal 5'-phosphate GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum

MS/MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Experimental LC-MS/MSLC-MS/MS Spectrum - Pyridoxal 5'-phosphate Quattro_QQQ 10V, Positive-QTOF (Annotated)splash10-0f6t-0690000000-4aa57f3f28f0bdef9dcf2012-07-24HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Pyridoxal 5'-phosphate Quattro_QQQ 25V, Positive-QTOF (Annotated)splash10-0fxx-8900000000-ee972556340c616505282012-07-24HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Pyridoxal 5'-phosphate Quattro_QQQ 40V, Positive-QTOF (Annotated)splash10-014l-9100000000-3cc29fb51820adecd59c2012-07-24HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Pyridoxal 5'-phosphate LC-ESI-QQ (API3000, Applied Biosystems) 10V, Negative-QTOFsplash10-0002-0090000000-9b86e80a9dd0de14ab592012-08-31HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Pyridoxal 5'-phosphate LC-ESI-QQ (API3000, Applied Biosystems) 20V, Negative-QTOFsplash10-03dj-9800000000-9313aa9cbf19bc6311c52012-08-31HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Pyridoxal 5'-phosphate LC-ESI-QQ (API3000, Applied Biosystems) 30V, Negative-QTOFsplash10-0002-9500000000-7ce120a58879e2214ce52012-08-31HMDB team, MONA