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Record Information
Version2.0
Created at2005-11-16 15:48:42 UTC
Updated at2025-02-11 15:42:31 UTC
NP-MRD IDNP0001044
Secondary Accession NumbersNone
Natural Product Identification
Common NameBiopterin
DescriptionBiopterin, also known as tetrahydrobiopterin or BH4, belongs to the class of organic compounds known as biopterins and derivatives. These are coenzymes containing a 2-amino-pteridine-4-one derivative. Biopterin or tetrahydrobiopterin is also classified as a pterin derivative that consists of pterin group bearing an amino, an oxo and a 1,2-dihydroxypropyl substituent at positions 2, 4 and 6, respectively. Biopterin compounds found within the animals include BH4 (tetrahydrobiopterin), the free radical BH3, and BH2 (also a free radical, called Dihydrobiopterin). BH2 is produced in the synthesis of L-DOPA, dopamine, norepinephrine and epinephrine. It is restored to the required cofactor tetrahydrobiopterin by the enzyme dihydrobiopterin reductase. Tetrahydrobiopterin (BH4) is a cofactor of the three aromatic amino acid hydroxylase enzymes, used in the degradation of amino acid phenylalanine and in the biosynthesis of the neurotransmitters serotonin (5-hydroxytryptamine, 5-HT), melatonin, dopamine, norepinephrine (noradrenaline), epinephrine (adrenaline). It is also a cofactor for the production of nitric oxide (NO) by the nitric oxide syntheses. Tetrahydrobiopterin is biosynthesized from guanosine triphosphate (GTP) by three chemical reactions mediated by the enzymes GTP cyclohydrolase I (GTPCH), 6-pyruvoyltetrahydropterin synthase (PTPS), and sepiapterin reductase (SR). Biopterin synthesis disorders are a cause of hyperphenylalaninemia. There are 3 distinct forms of phenylketonuria or hyperphenylalaninemia, each caused by lack of aromatic amino acid hydroxylase enzymes. The variant forms of hyperphenylalaninemia that are caused by the lack of dihydropteridine reductase or tetrahydrobiopterin are characterized by severe neurological deterioration, impaired functioning of tyrosine and tryptophan hydroxylases, and the resultant deficiency of tyrosine- and tryptophan-derived monoamine neurotransmitters in brain. (PMID 3930837 ).
Structure
Thumb
Synonyms
ValueSource
(-)-BiopterinChEBI
(1'r,1's) BiopterinHMDB
2-Amino-6-(L-erythro-1,2-dihydroxypropyl)-4(3H)-pteridinoneHMDB
6-BiopterinHMDB
L-BiopterinHMDB
L-Erythro-biopterinHMDB
Pterin H b2HMDB
[S-(R*,s*)]-2-amino-6-(1,2-dihydroxypropyl)-4(1H)-pteridinoneHMDB
OrinapterinHMDB
DictyopterinHMDB
2-Amino-6-(1,2-dihydroxypropyl)-4(1H)-pteridinoneHMDB
BiopterinMeSH
Chemical FormulaC9H11N5O3
Average Mass237.2153 Da
Monoisotopic Mass237.08619 Da
IUPAC Name2-amino-6-[(1R,2S)-1,2-dihydroxypropyl]-4,8-dihydropteridin-4-one
Traditional Name2-amino-6-[(1R,2S)-1,2-dihydroxypropyl]-8H-pteridin-4-one
CAS Registry Number22150-76-1
SMILES
C[C@H](O)[C@H](O)C1=CNC2=NC(N)=NC(=O)C2=N1
InChI Identifier
InChI=1S/C9H11N5O3/c1-3(15)6(16)4-2-11-7-5(12-4)8(17)14-9(10)13-7/h2-3,6,15-16H,1H3,(H3,10,11,13,14,17)/t3-,6-/m0/s1
InChI KeyLHQIJBMDNUYRAM-DZSWIPIPSA-N
Experimental Spectra
Spectrum TypeDescriptionDepositor EmailDepositor OrganizationDepositorDeposition DateView
1D NMR1H NMR Spectrum (1D, 600 MHz, DMSO, simulated)V.dorna832021-08-22View Spectrum
2D NMR[1H, 13C]-HSQC NMR Spectrum (2D, 600 MHz, 100%_DMSO, experimental)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
Predicted Spectra
Not Available
Chemical Shift Submissions
Spectrum TypeDescriptionDepositor EmailDepositor OrganizationDepositorDeposition DateView
1D NMR1H NMR Spectrum (1D, 600 MHz, DMSO, simulated)v.dorna83@yahoo.comNot AvailableNot Available2021-08-16View Spectrum
Species
Species of Origin
Species Where Detected
Species NameSourceReference
Escherichia coliKNApSAcK Database
Chemical Taxonomy
Description Belongs to the class of organic compounds known as biopterins and derivatives. These are coenzymes containing a 2-amino-pteridine-4-one derivative. They are mainly synthesized in several parts of the body, including the pineal gland.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassPteridines and derivatives
Sub ClassPterins and derivatives
Direct ParentBiopterins and derivatives
Alternative Parents
Substituents
  • Biopterin
  • Aminopyrimidine
  • Pyrimidone
  • Pyrazine
  • Pyrimidine
  • Heteroaromatic compound
  • Vinylogous amide
  • 1,2-diol
  • Secondary alcohol
  • Azacycle
  • Organic oxygen compound
  • Alcohol
  • Aromatic alcohol
  • Hydrocarbon derivative
  • Primary amine
  • Organooxygen compound
  • Organonitrogen compound
  • Organic nitrogen compound
  • Organic oxide
  • Amine
  • Organopnictogen compound
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors
Physical Properties
StateSolid
Experimental Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water Solubility0.7 mg/mLNot Available
LogPNot AvailableNot Available
Predicted Properties
PropertyValueSource
Water Solubility4.06 g/LALOGPS
logP-1.4ALOGPS
logP-2.2ChemAxon
logS-2.5ALOGPS
pKa (Strongest Acidic)8.18ChemAxon
pKa (Strongest Basic)-1.4ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count8ChemAxon
Hydrogen Donor Count4ChemAxon
Polar Surface Area132.66 ŲChemAxon
Rotatable Bond Count2ChemAxon
Refractivity57.81 m³·mol⁻¹ChemAxon
Polarizability22.47 ųChemAxon
Number of Rings2ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
HMDB IDHMDB0000468
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FoodDB IDFDB022060
KNApSAcK IDC00018229
Chemspider ID392795
KEGG Compound IDC06313
BioCyc IDCPD-10819
BiGG IDNot Available
Wikipedia LinkBiopterin
METLIN ID247
PubChem Compound445040
PDB IDNot Available
ChEBI ID63931
Good Scents IDrw1223491
References
General References