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Record Information
Version4.0
Creation Date2006-05-22 14:17:30 UTC
Update Date2017-09-27 08:24:10 UTC
HMDB IDHMDB0001982
Secondary Accession Numbers
  • HMDB01982
Metabolite Identification
Common Name3,7-Dimethyluric acid
Description3,7-Dimethyluric acid is a methyl derivative of uric acid, found occasionally in human urine. 3,7-Dimethyluric 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
Thumb
Synonyms
ValueSource
37-Dimethyluric acidChEMBL
37-DimethylateGenerator
37-Dimethylic acidGenerator
3,7-DimethylateGenerator
3,7-Dimethylic acidGenerator
3,7-Dimethyl-2,6,8-trihydroxypurineHMDB
3,7-Dimethyl-7,9-dihydro-1H-purine-2,6,8(3H)-trioneHMDB
3,7-DMUMeSH
Chemical FormulaC7H8N4O3
Average Molecular Weight196.1634
Monoisotopic Molecular Weight196.059640142
IUPAC Name3,7-dimethyl-2,3,6,7,8,9-hexahydro-1H-purine-2,6,8-trione
Traditional Name3,7-dimethyluric acid
CAS Registry Number13087-49-5
SMILES
CN1C(=O)NC2=C1C(=O)NC(=O)N2C
InChI Identifier
InChI=1S/C7H8N4O3/c1-10-3-4(8-6(10)13)11(2)7(14)9-5(3)12/h1-2H3,(H,8,13)(H,9,12,14)
InChI KeyHMLZLHKHNBLLJD-UHFFFAOYSA-N
Chemical Taxonomy
DescriptionThis compound belongs to the class of chemical entities known as xanthines. These are purine derivatives with a ketone group conjugated at carbons 2 and 6 of the purine moiety.
KingdomChemical entities
Super ClassOrganic compounds
ClassOrganoheterocyclic compounds
Sub ClassImidazopyrimidines
Direct ParentXanthines
Alternative Parents
Substituents
  • Xanthine
  • 6-oxopurine
  • Purinone
  • Alkaloid or derivatives
  • Pyrimidone
  • N-substituted imidazole
  • Pyrimidine
  • Azole
  • Imidazole
  • Heteroaromatic compound
  • Vinylogous amide
  • Lactam
  • Urea
  • Azacycle
  • Hydrocarbon derivative
  • Organic oxide
  • Organopnictogen compound
  • Organooxygen compound
  • Organonitrogen compound
  • Organic oxygen compound
  • Organic nitrogen compound
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors
Ontology
Disposition

Biological Location:

  Subcellular:

  Biofluid and excreta:

  Organ and components:

Source:

Process

Naturally occurring process:

  Biological process:

    Biochemical pathway:

Role

Biological role:

Physical Properties
StateSolid
Experimental Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogP-1.33GASPARI,F & BONATI,M (1987)
Predicted Properties
PropertyValueSource
Water Solubility9.62 g/LALOGPS
logP-0.61ALOGPS
logP-1.1ChemAxon
logS-1.3ALOGPS
pKa (Strongest Acidic)8.13ChemAxon
pKa (Strongest Basic)-6ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area81.75 ŲChemAxon
Rotatable Bond Count0ChemAxon
Refractivity55.42 m³·mol⁻¹ChemAxon
Polarizability17.69 ųChemAxon
Number of Rings2ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectra
Spectra
Spectrum TypeDescriptionSplash Key
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-0v0a-0900000000-46adc1bd1a2829ed3eabView in MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 10V, Positive (Annotated)splash10-0002-0900000000-5554059238ba6f5a4aa7View in MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 25V, Positive (Annotated)splash10-001l-9800000000-bcef3be559d5d3540d62View in MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 40V, Positive (Annotated)splash10-014l-9000000000-7d225864dafe7484ef17View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0002-0900000000-81b25f479c4f1663781dView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0007-0900000000-0f875011e8751037af3fView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0006-9100000000-ddcf3e38bdc4d7198abcView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-0002-0900000000-f9c0039adcc98c79f10dView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0f6t-0900000000-5398ccddcd1ad6de4811View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0006-9300000000-79381deb2ab0e04daf89View in MoNA
1D NMR1H NMR SpectrumNot AvailableView in JSpectraViewer
2D NMR[1H,13C] 2D NMR SpectrumNot AvailableView in JSpectraViewer
Biological Properties
Cellular Locations
  • Cytoplasm
Biofluid Locations
  • Blood
  • Feces
  • Urine
Tissue Location
  • Kidney
  • Liver
Pathways
NameSMPDB/PathwhizKEGG
Caffeine MetabolismPw000015Pw000015 greyscalePw000015 simpleMap00232
Displaying 1 entry
Normal Concentrations
BiofluidStatusValueAgeSexConditionReferenceDetails
BloodExpected but not Quantified Not AvailableNot AvailableNormal
    details
    UrineDetected but not Quantified Adult (>18 years old)Both
    Normal
    details
    UrineDetected but not Quantified Adult (>18 years old)BothNormal details
    Abnormal Concentrations
    BiofluidStatusValueAgeSexConditionReferenceDetails
    FecesDetected but not Quantified Adult (>18 years old)Not Specifiedobese details
    FecesDetected but not Quantified Adult (>18 years old)BothColorectal Cancer details
    FecesDetected but not Quantified Adult (>18 years old)BothColorectal Cancer details
    Associated Disorders and Diseases
    Disease ReferencesNone
    Associated OMIM IDsNone
    DrugBank IDNot Available
    DrugBank Metabolite IDDBMET00544
    Phenol Explorer Compound IDNot Available
    Phenol Explorer Metabolite IDNot Available
    FoodDB IDFDB022780
    KNApSAcK IDNot Available
    Chemspider ID74994
    KEGG Compound IDNot Available
    BioCyc IDNot Available
    BiGG IDNot Available
    Wikipedia LinkNot Available
    METLIN IDNot Available
    PubChem Compound83126
    PDB IDNot Available
    ChEBI ID149724
    References
    Synthesis ReferenceNot Available
    Material Safety Data Sheet (MSDS)Download (PDF)
    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 ]

    Enzymes

    General function:
    Involved in oxidoreductase activity
    Specific function:
    Key enzyme in purine degradation. Catalyzes the oxidation of hypoxanthine to xanthine. Catalyzes the oxidation of xanthine to uric acid. Contributes to the generation of reactive oxygen species. Has also low oxidase activity towards aldehydes (in vitro).
    Gene Name:
    XDH
    Uniprot ID:
    P47989
    Molecular weight:
    146422.99
    Reactions
    Theobromine + Water + Oxygen → 3,7-Dimethyluric acid + Hydrogen peroxidedetails