Chemical Component Summary

Identifiers (4-formyl-5-hydroxy-6-methylpyridin-3-yl)methyl dihydrogen phosphate
(5-hydroxy-4-methanoyl-6-methyl-pyridin-3-yl)methyl dihydrogen phosphate
Synonyms VITAMIN B6 Phosphate
Formula C8 H10 N O6 P
Molecular Weight 247.14 g/mol
Type non-polymer
Isomeric SMILES Cc1ncc(COP(O)(O)=O)c(C=O)c1O
InChI 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)

Chemical Details

Formal Charge 0
Atom Count 26
Chiral Atom Count 0
Chiral Atoms
Bond Count 26
Aromatic Bond Count 6
Leaving Atoms O4A

Drug Info: DrugBank

DrugBank ID DB00114   (Stereoisomeric match)
Name Pyridoxal Phosphate
Groups nutraceutical
Description This is the active form of vitamin B6 serving as a coenzyme for synthesis of amino acids, neurotransmitters (serotonin, norepinephrine), sphingolipids, aminolevulinic acid. During transamination of amino acids, pyridoxal phosphate is transiently converted into pyridoxamine phosphate (pyridoxamine). [PubChem]
  • 3-hydroxy-2-methyl-5-((phosphonooxy)methyl)-4-pyridinecarboxaldehyde
  • 3-hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde 5-phosphate
  • Codecarboxylase
  • PLP
  • Pyridoxal 5-monophosphoric acid ester
Salts Pyridoxal phosphate hydrate
Brand Names
  • Enbrace Hr
  • Enlyte
  • Biosechs
  • Himitan
  • Vitazechs
Affected Organism Humans and other mammals
Indication For nutritional supplementation and for treating dietary shortage or imbalance.
Pharmacology The two major forms of vitamin B6 are pyridoxine and pyridoxamine. In the liver they are converted to pyridoxal phosphate (PLP) which is a cofactor in many reactions of amino acid metabolism. PLP also is necessary for the enzymatic reaction governing the release of glucose from glycogen. Pyroluria is one potential cause of vitamin B6 deficiency.
Mechanism of action Pyridoxal Phosphate is a coenzyme of many enzymatic reactions. It is the active form of vitamin B6 which comprises three natural organic compounds, pyridoxal, pyridoxamine and pyridoxine. Pyridoxal phosphate acts as a coenzyme in all transamination reactions, and in some decarboxylation and deamination reactions of amino acids. The aldehyde group of pyridoxal phosphate forms a Schiff-base linkage with the epsilon-amino group of a specific lysine group of the aminotransferase enzyme. The alpha-amino group of the amino acid substrate displaces the epsilon-amino group of the active-site lysine residue. The resulting aldimine becomes deprotonated to become a quinoid intermediate, which in turn accepts a proton at a different position to become a ketimine. The resulting ketimine is hydrolysed so that the amino group remains on the protein complex.
Route of administration Oral
  • Alimentary Tract and Metabolism
  • Chemical Actions and Uses
  • Coenzymes
  • Diet, Food, and Nutrition
  • Dietary Supplements
ATC-Code A11HA06
CAS number 54-47-7

Drug Targets

Name Sequence Search Pharmacological Action Actions
Glycogen phosphorylase, liver form MAKPLTDQEKRRQISIRGIVGVENVAELKKSFNRHLHFTLVKDRNVATTR... unknown cofactor
Cysteine sulfinic acid decarboxylase MADSEALPSLAGDPVAVEALLRAVFGVVVDEAIQKGTSVSQKVCEWKEPE... unknown cofactor
Alanine--glyoxylate aminotransferase 2, mitochondrial MTLIWRHLLRPLCLVTSAPRILEMHPFLSLGTSRTSVTKLSLHTKPRMPP... unknown cofactor
Cysteine desulfurase, mitochondrial MLLRAAWRRAAVAVTAAPGPKPAAPTRGLRLRVGDRAPQSAVPADTAAAP... unknown cofactor
View More Drug Targets
Drug Info/Drug Targets: DrugBank 3.0: a comprehensive resource for 'omics' research on drugs. Knox C, Law V, Jewison T, Liu P, Ly S, Frolkis A, Pon A, Banco K, Mak C, Neveu V, Djoumbou Y, Eisner R, Guo AC, Wishart DS. Nucleic Acids Res. 2011 Jan; 39 (Database issue):D1035-41. | PMID: 21059682