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Record Information
Version4.0
StatusDetected but not Quantified
Creation Date2006-05-22 14:17:30 UTC
Update Date2019-03-14 18:02:14 UTC
HMDB IDHMDB0001970
Secondary Accession Numbers
  • HMDB01970
Metabolite Identification
Common Name3-Methyluric acid
Description3-Methyluric acid is a methyl derivative of uric acid, found occasionally in human urine. 3-Methyluracil is one of the purine components in urinary calculi. Methylated purines originate from the metabolism of methylxanthines (caffeine, theophylline and theobromine). Methyluric acids are indistinguishable from uric acid by simple methods routinely used in clinical laboratories, requiring the use of high-performance liquid chromatography (HPLC). Purine derivatives in urinary calculi could be considered markers of abnormal purine metabolism. The content of a purine derivative in stone depends on its average urinary excretion in the general population, similarity to the chemical structure of uric acid, and content of the latter in stone. This suggests that purines in stones represent a solid solution with uric acid as solvent. It is also plausible that methylxanthines, ubiquitous components of the diet and drugs, are involved in the pathogenesis of urolithiasis. Caffeine is metabolized via successive pathways mainly catalyzed by CYP1A2, xanthine oxidase or N-acetyltransferase-2 to give 14 different metabolites. CYP1A2 activity shows an inter-individual variability among the population. CYP1A2, an isoform of the CYP1A cytochrome P450 super-family, is involved in the metabolism of many drugs and plays a potentially important role in the induction of chemical carcinogenesis. (PMID: 11712316 , 15833286 , 3506820 , 15013152 ).
Structure
Data?1547234187
Synonyms
ValueSource
3-MethylateGenerator
3-Methylic acidGenerator
3-Methyl-2,6,8-trioxopurineHMDB
3-Methyl-7,9-dihydro-3H-purine-2,6,8-trioneHMDB
3-MethylurateHMDB
4,9-Dihydro-3-methyl-1H-purine-2,6,8(3H)-trioneHMDB
Chemical FormulaC6H6N4O3
Average Molecular Weight182.1368
Monoisotopic Molecular Weight182.043990078
IUPAC Name3-methyl-2,3,6,7,8,9-hexahydro-1H-purine-2,6,8-trione
Traditional Name3-methyluric acid
CAS Registry Number605-99-2
SMILES
CN1C2=C(NC(=O)N2)C(=O)NC1=O
InChI Identifier
InChI=1S/C6H6N4O3/c1-10-3-2(7-5(12)8-3)4(11)9-6(10)13/h1H3,(H2,7,8,12)(H,9,11,13)
InChI KeyODCYDGXXCHTFIR-UHFFFAOYSA-N
Chemical Taxonomy
Description belongs to the class of organic compounds known as xanthines. These are purine derivatives with a ketone group conjugated at carbons 2 and 6 of the purine moiety.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassImidazopyrimidines
Sub ClassPurines and purine derivatives
Direct ParentXanthines
Alternative Parents
Substituents
  • Xanthine
  • 6-oxopurine
  • Purinone
  • Alkaloid or derivatives
  • Pyrimidone
  • Pyrimidine
  • Azole
  • Imidazole
  • Heteroaromatic compound
  • Vinylogous amide
  • Lactam
  • Urea
  • Azacycle
  • Hydrocarbon derivative
  • Organic oxide
  • Organooxygen compound
  • Organonitrogen compound
  • Organic nitrogen compound
  • Organopnictogen compound
  • Organic oxygen compound
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors
Ontology
Disposition

Source:

Biological location:

Role

Biological role:

Physical Properties
StateSolid
Experimental Properties
PropertyValueReference
Melting Point> 350 °CNot Available
Boiling PointNot AvailableNot Available
Water Solubility0.054 mg/mL at 25 °CNot Available
LogP-1.08GASPARI,F & BONATI,M (1987)
Predicted Properties
PropertyValueSource
Water Solubility3.79 g/LALOGPS
logP-1ALOGPS
logP-1.3ChemAxon
logS-1.7ALOGPS
pKa (Strongest Acidic)7.66ChemAxon
pKa (Strongest Basic)-6.3ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count3ChemAxon
Polar Surface Area90.54 ŲChemAxon
Rotatable Bond Count0ChemAxon
Refractivity50.53 m³·mol⁻¹ChemAxon
Polarizability15.62 ųChemAxon
Number of Rings2ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectra
Spectrum TypeDescriptionSplash KeyView
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-0w39-1900000000-4493eeacfd3b31bf832aJSpectraViewer | MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-001i-0900000000-a68b56cfc61693cc09d3JSpectraViewer | MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-001i-1900000000-70450e20782b78788804JSpectraViewer | MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0le9-9400000000-9a16030e87688510dd07JSpectraViewer | MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-001i-0900000000-064ba09247119134215dJSpectraViewer | MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-001r-2900000000-440959c7239da4a5e5ccJSpectraViewer | MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0006-9300000000-b3af7b9a39ec8e73e1c5JSpectraViewer | MoNA
Biological Properties
Cellular Locations
  • Cytoplasm
Biospecimen Locations
  • Blood
  • Feces
  • Urine
Tissue Locations
  • Kidney
  • Liver
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodExpected but not Quantified Not AvailableNot AvailableNormal
    details
    FecesDetected but not Quantified Adult (>18 years old)Both
    Normal
    details
    FecesDetected but not Quantified Adult (>18 years old)Both
    Normal
    details
    UrineDetected but not Quantified Adult (>18 years old)Both
    Normal
    details
    UrineExpected but not Quantified Not AvailableNot AvailableNormal
      details
      Abnormal Concentrations
      Not Available
      Associated Disorders and Diseases
      Disease ReferencesNone
      Associated OMIM IDsNone
      DrugBank IDNot Available
      Phenol Explorer Compound IDNot Available
      FoodDB IDFDB022770
      KNApSAcK IDNot Available
      Chemspider ID11311
      KEGG Compound IDNot Available
      BioCyc IDNot Available
      BiGG IDNot Available
      Wikipedia LinkNot Available
      METLIN IDNot Available
      PubChem Compound11804
      PDB IDNot Available
      ChEBI ID149031
      References
      Synthesis ReferenceBiltz, Heinrich; Heyn, Myron. 3-Methyluric acid. Berichte der Deutschen Chemischen Gesellschaft [Abteilung] B: Abhandlungen (1919), 52B 768-84.
      Material Safety Data Sheet (MSDS)Not Available
      General References
      1. Morris GS, Simmonds HA, Davies PM: Use of biological fluids for the rapid diagnosis of potentially lethal inherited disorders of human purine and pyrimidine metabolism. Biomed Chromatogr. 1986 Jun;1(3):109-18. [PubMed:3506820 ]
      2. Safranow K, Machoy Z: Simultaneous determination of 16 purine derivatives in urinary calculi by gradient reversed-phase high-performance liquid chromatography with UV detection. J Chromatogr B Analyt Technol Biomed Life Sci. 2005 May 25;819(2):229-35. [PubMed:15833286 ]
      3. Safranow K: [Identification and quantitation of purine derivatives in urinary calculi as markers of abnormal purine metabolism by using high-performance liquid chromatography (HPLC)]. Ann Acad Med Stetin. 2000;46:35-49. [PubMed:11712316 ]
      4. Caubet MS, Comte B, Brazier JL: Determination of urinary 13C-caffeine metabolites by liquid chromatography-mass spectrometry: the use of metabolic ratios to assess CYP1A2 activity. J Pharm Biomed Anal. 2004 Feb 4;34(2):379-89. [PubMed:15013152 ]