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Record Information
Version3.6
Creation Date2013-05-17 01:00:46 UTC
Update Date2017-08-15 23:26:31 UTC
HMDB IDHMDB0060412
Secondary Accession Numbers
  • HMDB60412
Metabolite Identification
Common Name6-Methylmercaptopurine
Description6-Methylmercaptopurine is a metabolite of mercaptopurine. Mercaptopurine (also called 6-mercaptopurine, 6-MP or its brand name Purinethol) is an immunosuppressive drug. It is a thiopurine. (Wikipedia)
Structure
Thumb
Synonyms
ValueSource
6-MethylmercaptopurineChEBI
Thiopurine S-methyletherChEBI
MethylmercaptopurineMeSH
Chemical FormulaC6H6N4S
Average Molecular Weight166.204
Monoisotopic Molecular Weight166.031316902
IUPAC Name6-(methylsulfanyl)-9H-purine
Traditional Name6-methylthiopurine
CAS Registry NumberNot Available
SMILES
CSC1=NC=NC2=C1N=CN2
InChI Identifier
InChI=1S/C6H6N4S/c1-11-6-4-5(8-2-7-4)9-3-10-6/h2-3H,1H3,(H,7,8,9,10)
InChI KeyUIJIQXGRFSPYQW-UHFFFAOYSA-N
Chemical Taxonomy
DescriptionThis compound belongs to the class of chemical entities known as 6-thiopurines. These are compounds containing a purine that carries a thiol group at the 6-position. Purine is a bicyclic aromatic compound made up of a pyrimidine ring fused to an imidazole ring.
KingdomChemical entities
Super ClassOrganic compounds
ClassOrganoheterocyclic compounds
Sub ClassImidazopyrimidines
Direct Parent6-thiopurines
Alternative Parents
Substituents
  • 6-thiopurine
  • Aryl thioether
  • Alkylarylthioether
  • Pyrimidine
  • Azole
  • Imidazole
  • Heteroaromatic compound
  • Azacycle
  • Sulfenyl compound
  • Thioether
  • Organic nitrogen compound
  • Hydrocarbon derivative
  • Organosulfur compound
  • Organonitrogen compound
  • Organopnictogen compound
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors
Ontology
StatusExpected but not Quantified
Origin
  • Drug metabolite
Biofunction
  • Waste products
ApplicationNot Available
Cellular locationsNot Available
Physical Properties
StateNot Available
Experimental Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Predicted Properties
PropertyValueSource
Water Solubility3.6 mg/mLALOGPS
logP0.64ALOGPS
logP0.93ChemAxon
logS-1.7ALOGPS
pKa (Strongest Acidic)9.92ChemAxon
pKa (Strongest Basic)4.71ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area54.46 Å2ChemAxon
Rotatable Bond Count1ChemAxon
Refractivity44.66 m3·mol-1ChemAxon
Polarizability16 Å3ChemAxon
Number of Rings2ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectra
SpectraNot Available
Biological Properties
Cellular LocationsNot Available
Biofluid Locations
  • Blood
  • Urine
Tissue Location
  • Kidney
  • Liver
Pathways
NameSMPDB LinkKEGG Link
Azathioprine PathwaySMP00427Not Available
Mercaptopurine Metabolism PathwaySMP00609Not Available
Mercaptopurine PathwaySMP00428Not Available
Thioguanine PathwaySMP00430Not Available
Normal Concentrations
BiofluidStatusValueAgeSexConditionReferenceDetails
BloodExpected but not Quantified Not AvailableNot AvailableNormal
    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
      DrugBank Metabolite IDNot Available
      Phenol Explorer Compound IDNot Available
      Phenol Explorer Metabolite IDNot Available
      FoodDB IDNot Available
      KNApSAcK IDNot Available
      Chemspider IDNot Available
      KEGG Compound IDC16614
      BioCyc IDNot Available
      BiGG IDNot Available
      Wikipedia LinkNot Available
      NuGOwiki LinkHMDB0060412
      METLIN IDNot Available
      PubChem CompoundNot Available
      PDB IDNot Available
      ChEBI IDNot Available
      References
      Synthesis ReferenceNot Available
      Material Safety Data Sheet (MSDS)Not Available
      General References
      1. Magrane M: UniProt Knowledgebase: a hub of integrated protein data. Database (Oxford). 2011 Mar 29;2011:bar009. doi: 10.1093/database/bar009. Print 2011. [PubMed:21447597 ]

      Enzymes

      General function:
      Involved in thiopurine S-methyltransferase activity
      Specific function:
      Catalyzes the S-methylation of thiopurine drugs such as 6-mercaptopurine.
      Gene Name:
      TPMT
      Uniprot ID:
      P51580
      Molecular weight:
      28180.09
      Reactions
      Mercaptopurine + S-Adenosylmethionine → 6-Methylmercaptopurine + S-Adenosylhomocysteinedetails
      General function:
      Involved in hypoxanthine phosphoribosyltransferase activity
      Specific function:
      Converts guanine to guanosine monophosphate, and hypoxanthine to inosine monophosphate. Transfers the 5-phosphoribosyl group from 5-phosphoribosylpyrophosphate onto the purine. Plays a central role in the generation of purine nucleotides through the purine salvage pathway.
      Gene Name:
      HPRT1
      Uniprot ID:
      P00492
      Molecular weight:
      24579.155
      Reactions
      6-Methylmercaptopurine + Phosphoribosyl pyrophosphate → 6-Methylthiopurine 5'-monophosphate ribonucleotide + Pyrophosphatedetails