Record Information
Creation Date2012-05-31 13:56:27 -0600
Update Date2015-09-13 12:56:12 -0600
Secondary Accession Numbers
  • ECMDB02275
Description7,8-dihydroneopterin (H(2)Neo) is an intermediate in folate biosynthesis pathway. It is converted to glycolaldehyde and 2-amino-4-hydroxy-6-hydroxymethyl-7,8-dihydropteridine via bifunctional dihydroneopterin aldolase/dihydroneopterin triphosphate 2'-epimerase (EC: it is also a substrate of alkaline phosphatase. (KEGG) Dihydromonapterin is a member of the chemical class known as Biopterins and Derivatives. These are coenzymes containing a 2-amino-pteridine-4-one derivative. Dihydromonapterin is an intermediate in the synthesis of tetrahydromonopterin. Tetrahydromonapterin is the major tetrahydropterin in E. coli, although the biological role of tetrahydromonapterin in E. coli is currently unknown.
  • 2-Amino-4-hydroxy-6-(D-erythro)-trihydroxypropyldihydropteridin
  • 2-Amino-4-hydroxy-6-(D-erythro-1',2',3'-trihydroxypropyl)-7,8-dihydropteridine
  • 2-Amino-4-hydroxy-6-(D-erythro-1,2,3-trihydroxypropyl)-7,8-dihydropteridine
  • 2-Amino-6-[(1S,2R)-1,2,3-trihydroxypropyl]-7,8-dihydropteridin-4(1H)-one
  • 2-Amino-6-[(1S,2R)-1,2,3-trihydroxypropyl]-7,8-dihydropteridin-4(3H)-one
  • 2-Amino-7,8-dihydro-6-(1,2,3-trihydroxypropyl)-4(1H)-pteridinone
  • 7,8-Dihydro-D-erythro-neopterin
  • 7,8-Dihydro-D-neopterin
  • 7,8-Dihydroneopterin
  • D-Erythro-7,8-Dihydroneopterin
  • DHM
  • DHN
  • Dihydro-neo-pterin
  • Dihydroneopterin
  • H2-MPt
  • NPR
Chemical Formula:C9H13N5O4
Weight:Average: 255.2306
Monoisotopic: 255.096753929
CAS number:1218-98-0
IUPAC Name:2-amino-6-(1,2,3-trihydroxypropyl)-1,4,7,8-tetrahydropteridin-4-one
Traditional IUPAC Name:2-amino-6-(1,2,3-trihydroxypropyl)-7,8-dihydro-1H-pteridin-4-one
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
  • Biopterin
  • Aminopyrimidine
  • Pyrimidone
  • Secondary aliphatic/aromatic amine
  • Pyrimidine
  • Vinylogous amide
  • Heteroaromatic compound
  • Ketimine
  • Secondary alcohol
  • Azacycle
  • Organic 1,3-dipolar compound
  • Propargyl-type 1,3-dipolar organic compound
  • Secondary amine
  • Polyol
  • Amine
  • Organopnictogen compound
  • Primary amine
  • Primary alcohol
  • Organic oxide
  • Organooxygen compound
  • Organonitrogen compound
  • Hydrocarbon derivative
  • Imine
  • Organic oxygen compound
  • Organic nitrogen compound
  • Alcohol
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors
Physical Properties
Melting point:Not Available
Experimental Properties:
Predicted Properties
Water Solubility1.86 g/LALOGPS
pKa (Strongest Acidic)7.97ChemAxon
pKa (Strongest Basic)3.22ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count9ChemAxon
Hydrogen Donor Count6ChemAxon
Polar Surface Area152.56 ŲChemAxon
Rotatable Bond Count3ChemAxon
Refractivity69.66 m³·mol⁻¹ChemAxon
Polarizability23.99 ųChemAxon
Number of Rings2ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Biological Properties
Cellular Locations:Cytoplasm
SMPDB Pathways:
Folate biosynthesisPW000908 ThumbThumb?image type=greyscaleThumb?image type=simple
GTP degradationPW001888 ThumbThumb?image type=greyscaleThumb?image type=simple
KEGG Pathways:
EcoCyc Pathways:
  • 6-hydroxymethyl-dihydropterin diphosphate biosynthesis I PWY-6147
  • tetrahydromonapterin biosynthesis PWY0-1433
Not Available
Spectrum TypeDescriptionSplash Key
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-03dr-9220000000-602126fb02cae16969f6View in MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (3 TMS) - 70eV, Positivesplash10-0aw9-3292200000-e6b52358cd355e939ab0View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0a4i-0090000000-e5dad4abb411efa4feb6View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-01p9-1790000000-449cabdd2508eefabcccView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-03dj-3900000000-b2abed21008ce5fb01bdView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-0udl-1390000000-1e1c831e7f68ac77caedView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0006-4950000000-948e3120b1a4f548982bView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-052f-9300000000-581b6b2fd47ffbefaa0cView in MoNA
  • Baier-Bitterlich G, Baier G, Fuchs D, Bock G, Hausen A, Utermann G, Pavelka M, Wachter H: Role of 7,8-dihydroneopterin in T-cell apoptosis and HTLV-1 transcription in vitro. Oncogene. 1996 Nov 21;13(10):2281-5. Pubmed: 8950996
  • Baier-Bitterlich G, Fuchs D, Wachter H: 7,8-Dihydroneopterin upregulates interferon-gamma promoter in T cells. Immunobiology. 1996;196(4):350-5. Pubmed: 9061375
  • Baier-Bitterlich G, Fuchs D, Zangerle R, Baeuerle PA, Werner ER, Fresser F, Uberall F, Baier G, Wachter H: trans-Activation of the HIV type 1 promoter by 7,8-dihydroneopterin in vitro. AIDS Res Hum Retroviruses. 1997 Jan 20;13(2):173-8. Pubmed: 9007202
  • Baird SK, Reid L, Hampton MB, Gieseg SP: OxLDL induced cell death is inhibited by the macrophage synthesised pterin, 7,8-dihydroneopterin, in U937 cells but not THP-1 cells. Biochim Biophys Acta. 2005 Sep 30;1745(3):361-9. Pubmed: 16084608
  • Duggan S, Rait C, Platt A, Gieseg S: Protein and thiol oxidation in cells exposed to peroxyl radicals is inhibited by the macrophage synthesised pterin 7,8-dihydroneopterin. Biochim Biophys Acta. 2002 Aug 19;1591(1-3):139-145. Pubmed: 12183064
  • Enzinger C, Wirleitner B, Lutz C, Bock G, Tomaselli B, Baier G, Fuchs D, Baier-Bitterlich G: 7,8-Dihydroneopterin induces apoptosis of Jurkat T-lymphocytes via a Bcl-2-sensitive pathway. Eur J Cell Biol. 2002 Apr;81(4):197-202. Pubmed: 12018387
  • Fuchs D, Reibnegger G, Werner ER, Wachter H: Increased 7,8-dihydroneopterin and reduced methyl-group metabolism in HIV-1 infection. Lancet. 1990 May 12;335(8698):1167. Pubmed: 1971904
  • Gieseg SP, Cato S: Inhibition of THP-1 cell-mediated low-density lipoprotein oxidation by the macrophage-synthesised pterin, 7,8-dihydroneopterin. Redox Rep. 2003;8(2):113-5. Pubmed: 12804014
  • Gieseg SP, Maghzal G, Glubb D: Protection of erythrocytes by the macrophage synthesized antioxidant 7,8 dihydroneopterin. Free Radic Res. 2001 Feb;34(2):123-36. Pubmed: 11264890
  • Gieseg SP, Reibnegger G, Wachter H, Esterbauer H: 7,8 Dihydroneopterin inhibits low density lipoprotein oxidation in vitro. Evidence that this macrophage secreted pteridine is an anti-oxidant. Free Radic Res. 1995 Aug;23(2):123-36. Pubmed: 7581810
  • Gieseg SP, Whybrow J, Glubb D, Rait C: Protection of U937 cells from free radical damage by the macrophage synthesized antioxidant 7,8-dihydroneopterin. Free Radic Res. 2001 Sep;35(3):311-8. Pubmed: 11697129
  • Greilberger J, Oettl K, Cvirn G, Reibnegger G, Jurgens G: Modulation of LDL oxidation by 7,8-dihydroneopterin. Free Radic Res. 2004 Jan;38(1):9-17. Pubmed: 15061649
  • Herpfer I, Greilberger J, Ledinski G, Widner B, Fuchs D, Jurgens G: Neopterin and 7,8-dihydroneopterin interfere with low density lipoprotein oxidation mediated by peroxynitrite and/or copper. Free Radic Res. 2002 May;36(5):509-20. Pubmed: 12150539
  • Horejsi R, Jung C, Moller R, Tafeit E, Reibnegger G: Generation of carbon monoxide and iron from hemeproteins in the presence of 7,8-dihydroneopterin. Biochim Biophys Acta. 2002 Jun 6;1571(2):124-30. Pubmed: 12049792
  • Kanehisa, M., Goto, S., Sato, Y., Furumichi, M., Tanabe, M. (2012). "KEGG for integration and interpretation of large-scale molecular data sets." Nucleic Acids Res 40:D109-D114. Pubmed: 22080510
  • Keseler, I. M., Collado-Vides, J., Santos-Zavaleta, A., Peralta-Gil, M., Gama-Castro, S., Muniz-Rascado, L., Bonavides-Martinez, C., Paley, S., Krummenacker, M., Altman, T., Kaipa, P., Spaulding, A., Pacheco, J., Latendresse, M., Fulcher, C., Sarker, M., Shearer, A. G., Mackie, A., Paulsen, I., Gunsalus, R. P., Karp, P. D. (2011). "EcoCyc: a comprehensive database of Escherichia coli biology." Nucleic Acids Res 39:D583-D590. Pubmed: 21097882
  • Pagel H, Fandrey J, Schobersberger W, Fuchs D, Jelkmann W: Effects of neopterin and 7,8-dihydroneopterin on hypoxia-induced renal erythropoietin production. Eur J Haematol. 1999 May;62(5):341-5. Pubmed: 10359064
  • Speth C, Stockl G, Fuchs D, Wirleitner B, Widner B, Wurzner R, Mohsenipour I, Lass-Florl C, Dierich MP: Inflammation marker 7,8-dihydroneopterin induces apoptosis of neurons and glial cells: a potential contribution to neurodegenerative processes. Immunobiology. 2000 Nov;202(5):460-76. Pubmed: 11205375
  • van der Werf, M. J., Overkamp, K. M., Muilwijk, B., Coulier, L., Hankemeier, T. (2007). "Microbial metabolomics: toward a platform with full metabolome coverage." Anal Biochem 370:17-25. Pubmed: 17765195
  • Winder, C. L., Dunn, W. B., Schuler, S., Broadhurst, D., Jarvis, R., Stephens, G. M., Goodacre, R. (2008). "Global metabolic profiling of Escherichia coli cultures: an evaluation of methods for quenching and extraction of intracellular metabolites." Anal Chem 80:2939-2948. Pubmed: 18331064
  • Wirleitner B, Baier-Bitterlich G, Bock G, Widner B, Fuchs D: 7,8-Dihydroneopterin-induced apoptosis in Jurkat T lymphocytes: a comparison with anti-Fas- and hydrogen peroxide-mediated cell death. Biochem Pharmacol. 1998 Nov 1;56(9):1181-7. Pubmed: 9802329
  • Wirleitner B, Czaputa R, Oettl K, Bock G, Widner B, Reibnegger G, Baier G, Fuchs D, Baier-Bitterlich G: Induction of apoptosis by 7,8-dihydroneopterin: involvement of radical formation. Immunobiology. 2001 May;203(4):629-41. Pubmed: 11402497
  • Wirleitner B, Obermoser G, Bock G, Neurauter G, Schennach H, Sepp N, Fuchs D: Induction of apoptosis in human blood T cells by 7,8-dihydroneopterin: the difference between healthy controls and patients with systemic lupus erythematosus. Clin Immunol. 2003 Jun;107(3):152-9. Pubmed: 12804528
Synthesis Reference:Not Available
Material Safety Data Sheet (MSDS)Download (PDF)
External Links:
Pubchem Compound ID659
Kegg IDC04874
ChemSpider ID639
Wikipedia IDNot Available


General function:
Involved in catalytic activity
Specific function:
A phosphate monoester + H(2)O = an alcohol + phosphate
Gene Name:
Uniprot ID:
Molecular weight:
A phosphate monoester + H(2)O = an alcohol + phosphate.
General function:
Involved in dihydroneopterin aldolase activity
Specific function:
Catalyzes the conversion of 7,8-dihydroneopterin to 6- hydroxymethyl-7,8-dihydropterin. Can use L-threo-dihydroneopterin and D-erythro-dihydroneopterin as substrates for the formation of 6-hydroxymethyldihydropterin, but it can also catalyze the epimerization of carbon 2' of dihydroneopterin and dihydromonapterin at appreciable velocity
Gene Name:
Uniprot ID:
Molecular weight:
2-amino-4-hydroxy-6-(D-erythro-1,2,3-trihydroxypropyl)-7,8-dihydropteridine = 2-amino-4-hydroxy-6-hydroxymethyl-7,8-dihydropteridine + glycolaldehyde.
General function:
Involved in oxidoreductase activity
Specific function:
Catalyzes the reduction of dihydrofolate to tetrahydrofolate
Gene Name:
Uniprot ID:
Molecular weight:
5,6,7,8-tetrahydrofolate + NADP(+) = 7,8-dihydrofolate + NADPH.