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Record Information
Version4.0
StatusDetected but not Quantified
Creation Date2006-05-22 14:17:30 UTC
Update Date2020-11-09 23:16:20 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?1582752220
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
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Spectra
Spectrum TypeDescriptionSplash KeyView
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-0w39-1900000000-4493eeacfd3b31bf832aSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-001i-0900000000-a68b56cfc61693cc09d3Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-001i-1900000000-70450e20782b78788804Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0le9-9400000000-9a16030e87688510dd07Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-001i-0900000000-064ba09247119134215dSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-001r-2900000000-440959c7239da4a5e5ccSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0006-9300000000-b3af7b9a39ec8e73e1c5Spectrum
Biological Properties
Cellular Locations
  • Cytoplasm
Biospecimen Locations
  • Blood
  • Feces
  • Urine
Tissue Locations
  • Kidney
  • Liver
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected but not QuantifiedNot QuantifiedAdult (>18 years old)BothNormal details
BloodExpected but not QuantifiedNot QuantifiedNot AvailableNot AvailableNormal
      Not Available
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Normal
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Normal
details
UrineDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Normal
details
UrineExpected but not QuantifiedNot QuantifiedNot AvailableNot AvailableNormal
      Not Available
details
UrineDetected but not QuantifiedNot QuantifiedAdult (>18 years old)BothNormal details
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB 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
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB ID
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. 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 ]
  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. 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 ]
  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 ]