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Record Information
Version5.0
StatusDetected but not Quantified
Creation Date2005-11-16 15:48:42 UTC
Update Date2023-02-21 17:15:05 UTC
HMDB IDHMDB0000704
Secondary Accession Numbers
  • HMDB00704
Metabolite Identification
Common NameIsoxanthopterin
DescriptionIsoxanthopterin is a pteridine normally present in plasma, urine, and other bodily fluids also vary from normal concentrations in some disease states and also have diagnostic value. Pteridines' urinary concentrations seem to vary independently from each other and from normal values to yield a pattern of excreted pteridines that is diagnostic for different species, tissues, and tumor types. Intravenous or intramuscular administration of isoxanthopterin inhibits the growth rates of animal tumor models. Pteridin derivatives are a family of organic compound with very similar chemical structures which play an important biochemistry role. Pteridines metabolism and its regulation in normal and pathological conditions have not been extensively investigated due to the difficulty of their quantification. A significant decrease of isoxanthopterin has been determined in cancer patients. (PMID 15837549 , 9800651 ). Xanthine dehydrogenase (XDH) is the enzymes responsible for the conversion of xanthine to uric acid. It requires the presence of the molybdenum cofactor for its proper functioning. XDH is reported to have additional functions, i.e., the conversion of pterin to isoxanthopterin, one of the steps the degradation pathway of 5,6,7,8-tetrahydrobiopterin (BH4). Isoxanthopterin is very low in some cases of hereditary xanthinuria (OMIM 278300 ) and molybdenum cofactor deficiency (OMIM 252150 ). (PMID: 8812740 ).
Structure
Thumb
Synonyms
ValueSource
2-Amino-4,7-dihydroxypteridineChEBI
2-Amino-3H,8H-pteridine-4,7-dioneHMDB
2-Aminopteridine-4,7-diolHMDB
IsoxanthopterinChEBI
Chemical FormulaC6H5N5O2
Average Molecular Weight179.1362
Monoisotopic Molecular Weight179.044324429
IUPAC Name2-amino-1,4,7,8-tetrahydropteridine-4,7-dione
Traditional Name2-amino-1,8-dihydropteridine-4,7-dione
CAS Registry Number529-69-1
SMILES
NC1=NC(=O)C2=C(N1)NC(=O)C=N2
InChI Identifier
InChI=1S/C6H5N5O2/c7-6-10-4-3(5(13)11-6)8-1-2(12)9-4/h1H,(H4,7,9,10,11,12,13)
InChI KeyGLKCOBIIZKYKFN-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as pterins and derivatives. These are polycyclic aromatic compounds containing a pterin moiety, which consist of a pteridine ring bearing a ketone and an amine group to form 2-aminopteridin-4(3H)-one.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassPteridines and derivatives
Sub ClassPterins and derivatives
Direct ParentPterins and derivatives
Alternative Parents
Substituents
  • Pterin
  • Aminopyrimidine
  • Pyrimidone
  • Pyrazine
  • Pyrimidine
  • Vinylogous amide
  • Heteroaromatic compound
  • Lactam
  • Azacycle
  • Amine
  • Hydrocarbon derivative
  • Organic oxide
  • Organopnictogen compound
  • Organic oxygen compound
  • Primary amine
  • Organooxygen compound
  • Organonitrogen compound
  • Organic nitrogen compound
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors
Ontology
Physiological effectNot Available
Disposition
ProcessNot Available
RoleNot Available
Physical Properties
StateSolid
Experimental Molecular Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water Solubility0.005 mg/mLNot Available
LogP-3.760 (est)The Good Scents Company Information System
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
Predicted Chromatographic Properties
Spectra
Biological Properties
Cellular Locations
  • Cytoplasm (predicted from logP)
Biospecimen Locations
  • Urine
Tissue LocationsNot Available
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
UrineDetected but not QuantifiedNot QuantifiedAdult (>18 years old)BothNormal details
UrineDetected but not QuantifiedNot QuantifiedAdult (>18 years old)BothNot Available details
Abnormal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
UrineDetected but not QuantifiedNot QuantifiedAdult (>18 years old)BothBladder cancer details
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDFDB005583
KNApSAcK IDC00051017
Chemspider ID10277
KEGG Compound IDC03975
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN ID5672
PubChem Compound10729
PDB IDNot Available
ChEBI ID16713
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB IDNot Available
Good Scents IDrw1252971
References
Synthesis ReferenceTaylor, Edward C.; Abdulla, Riaz F.; Tanaka, Kunihiko; Jacobi, Peter A. Pteridines. XXXVI. Syntheses of xanthopterin and isoxanthopterin. Application of N-oxide chemistry to highly functionalized pyrazines and pteridines. Journal of Organic Chemistry (1975), 40(16), 2341-7.
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Boltshauser E, Niederwieser A, Kierat L, Haenggeli CA: Pterins in patients with Rett syndrome. Am J Med Genet Suppl. 1986;1:317-21. [PubMed:3087192 ]
  2. Krumdieck CL, Fukushima K, Fukushima T, Shiota T, Butterworth CE Jr: A long-term study of the excretion of folate and pterins in a human subject after ingestion of 14C folic acid, with observations on the effect of diphenylhydantoin administration. Am J Clin Nutr. 1978 Jan;31(1):88-93. [PubMed:413430 ]
  3. Han F, Huynh BH, Shi H, Lin B, Ma Y: Pteridine analysis in urine by capillary electrophoresis using laser-induced fluorescence detection. Anal Chem. 1999 Apr 1;71(7):1265-9. [PubMed:10204031 ]
  4. Yamamoto T, Moriwaki Y, Takahashi S, Tsutsumi Z, Yamakita J, Nasako Y, Hiroishi K, Higashino K: Determination of human plasma xanthine oxidase activity by high-performance liquid chromatography. J Chromatogr B Biomed Appl. 1996 Jun 7;681(2):395-400. [PubMed:8811453 ]
  5. Lord JL, de Peyster A, Quintana PJ, Metzger RP: Cytotoxicity of xanthopterin and isoxanthopterin in MCF-7 cells. Cancer Lett. 2005 May 10;222(1):119-24. [PubMed:15837549 ]
  6. Espinosa-Mansilla A, Duran-Meras I, Salinas F: Simultaneous determination of pteridines in multicomponent mixtures using derivative spectrophotometry and partial least-squares calibration. J Pharm Biomed Anal. 1998 Sep;17(8):1325-34. [PubMed:9800651 ]
  7. Blau N, de Klerk JB, Thony B, Heizmann CW, Kierat L, Smeitink JA, Duran M: Tetrahydrobiopterin loading test in xanthine dehydrogenase and molybdenum cofactor deficiencies. Biochem Mol Med. 1996 Aug;58(2):199-203. [PubMed:8812740 ]