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Record Information
Version4.0
StatusDetected and Quantified
Creation Date2006-08-16 13:16:24 UTC
Update Date2020-02-26 21:23:12 UTC
HMDB IDHMDB0001327
Secondary Accession Numbers
  • HMDB01327
Metabolite Identification
Common NameRubidium
DescriptionRubidium is a soft, silvery-white metallic element of the alkali metal group, present in traces amounts in human tissues and fluids. Rb-87, a naturally occurring isotope, is (slightly) radioactive. Rubidium is very soft and highly reactive, with properties similar to other elements in group 1, like rapid oxidation in air. Rubidium, particularly 87Rb, in the form of vapor, is one of the most commonly-used atomic species employed for laser cooling and Bose-Einstein condensation. Its desirable features for this application include the ready availability of inexpensive diode laser light at the relevant wavelength, and the moderate temperatures required to obtain substantial vapor pressures. Physiologically, it exists as an ion in the body. It has been found slightly increased in neoplastic human breast tissues obtained from patients at the time of mastectomy, compared to normal tissue. (PMID: 6488192 , 15820728 , 7324778 , 9630429 , 577330 ).
Structure
Data?1582752192
Synonyms
ValueSource
RB(+)ChEBI
Rb+ChEBI
RUBIDIUM ionChEBI
Rubidium(1+)Kegg
Rubidium +HMDB
RubidiumHMDB
Chemical FormulaRb
Average Molecular Weight85.4678
Monoisotopic Molecular Weight84.911789341
IUPAC Namerubidium(1+) ion
Traditional Namerubidium(1+) ion
CAS Registry Number7440-17-7
SMILES
[Rb+]
InChI Identifier
InChI=1S/Rb/q+1
InChI KeyNCCSSGKUIKYAJD-UHFFFAOYSA-N
Chemical Taxonomy
Description belongs to the class of inorganic compounds known as homogeneous alkali metal compounds. These are inorganic compounds containing only metal atoms,with the largest atom being a alkali metal atom.
KingdomInorganic compounds
Super ClassHomogeneous metal compounds
ClassHomogeneous alkali metal compounds
Sub ClassNot Available
Direct ParentHomogeneous alkali metal compounds
Alternative ParentsNot Available
Substituents
  • Homogeneous alkali metal
Molecular FrameworkNot Available
External Descriptors
Ontology
Disposition

Route of exposure:

Biological location:

Source:

Role

Biological role:

Physical Properties
StateSolid
Experimental Properties
PropertyValueReference
Melting Point39 °CNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Predicted Properties
PropertyValueSource
logP0ChemAxon
Physiological Charge1ChemAxon
Hydrogen Acceptor Count0ChemAxon
Hydrogen Donor Count0ChemAxon
Polar Surface Area0 ŲChemAxon
Rotatable Bond Count0ChemAxon
Refractivity0 m³·mol⁻¹ChemAxon
Polarizability1.78 ųChemAxon
Number of Rings0ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterNoChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleNoChemAxon
Spectra
Spectrum TypeDescriptionSplash KeyView
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-001i-9000000000-ddf16821b4f8d12eb757Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-001i-9000000000-ddf16821b4f8d12eb757Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-001i-9000000000-ddf16821b4f8d12eb757Spectrum
Biological Properties
Cellular LocationsNot Available
Biospecimen Locations
  • Blood
  • Cerebrospinal Fluid (CSF)
  • Saliva
  • Urine
Tissue LocationsNot Available
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected and Quantified1.17-3.18 uMAdult (>18 years old)BothNormal details
BloodExpected but not QuantifiedNot QuantifiedNot AvailableNot Available
Normal
      Not Available
details
Cerebrospinal Fluid (CSF)Detected and Quantified0.499 +/- 0.097 uMAdult (>18 years old)Not SpecifiedNormal details
SalivaDetected and Quantified8.047 +/- 3.15 uMAdult (>18 years old)BothNormal
    • Zerihun T. Dame, ...
details
SalivaDetected and Quantified0.751 +/- 0.143 uMAdult (>18 years old)Male
Normal
details
SalivaDetected and Quantified0.808 +/- 0.233 uMAdult (>18 years old)Male
Normal
details
SalivaDetected and Quantified0.808 +/- 0.233 uMAdult (>18 years old)Male
Normal
details
SalivaDetected and Quantified0.736 +/- 0.157 uMAdult (>18 years old)Male
Normal
details
UrineDetected and Quantified1.354 (0.187-3.673) umol/mmol creatinineAdult (>18 years old)Both
Normal
details
UrineDetected and Quantified1.84 +/- 0.46 umol/mmol creatinineAdult (>18 years old)BothNormal
    • Geigy Scientific ...
    • West Cadwell, N.J...
    • Basel, Switzerlan...
details
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDFDB003783
KNApSAcK IDNot Available
Chemspider ID94865
KEGG Compound IDC17061
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkRubidium
METLIN IDNot Available
PubChem Compound105153
PDB IDNot Available
ChEBI ID49847
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB ID
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Rizk SL, Sky-Peck HH: Comparison between concentrations of trace elements in normal and neoplastic human breast tissue. Cancer Res. 1984 Nov;44(11):5390-4. [PubMed:6488192 ]
  2. Barany E, Bergdahl IA, Bratteby LE, Lundh T, Samuelson G, Skerfving S, Oskarsson A: Iron status influences trace element levels in human blood and serum. Environ Res. 2005 Jun;98(2):215-23. [PubMed:15820728 ]
  3. Meurling S, Plantin LO: The concentrations of trace elements in blood from healthy newborn infants. Acta Chir Scand. 1981;147(6):481-5. [PubMed:7324778 ]
  4. Cornett CR, Ehmann WD, Wekstein DR, Markesbery WR: Trace elements in Alzheimer's disease pituitary glands. Biol Trace Elem Res. 1998 Apr-May;62(1-2):107-14. [PubMed:9630429 ]
  5. Hagenfeldt K, Landgren BM, Plantin LO, Diczfalusy E: Trace elements in the human endometrium and decidua. A multielement analysis. Acta Endocrinol (Copenh). 1977 Jun;85(2):406-14. [PubMed:577330 ]