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Record Information
Version4.0
StatusDetected and Quantified
Creation Date2014-10-09 16:46:22 UTC
Update Date2018-05-20 07:09:19 UTC
HMDB IDHMDB0061921
Secondary Accession Numbers
  • HMDB61921
Metabolite Identification
Common NameNiobium
DescriptionNiobium, formerly columbium, is a chemical element with symbol Nb (formerly Cb) and atomic number 41. It is a soft, grey, ductile transition metal, which is often found in the pyrochlore mineral, the main commercial source for niobium, and columbite. The name comes from Greek mythology: Niobe, daughter of Tantalus.
Structure
Thumb
SynonymsNot Available
Chemical FormulaNb
Average Molecular Weight92.9036
Monoisotopic Molecular Weight92.903634644
IUPAC Nameniobium(5+) ion
Traditional Nameniobium(5+) ion
CAS Registry Number7440-03-1
SMILES
[Nb+5]
InChI Identifier
InChI=1S/Nb/q+5
InChI KeyQUWPZPLTANKXAM-UHFFFAOYSA-N
Chemical Taxonomy
DescriptionThis compound belongs to the class of inorganic compounds known as homogeneous transition metal compounds. These are inorganic compounds containing only metal atoms,with the largest atom being a transition metal atom.
KingdomInorganic compounds
Super ClassHomogeneous metal compounds
ClassHomogeneous transition metal compounds
Sub ClassNot Available
Direct ParentHomogeneous transition metal compounds
Alternative ParentsNot Available
Substituents
  • Homogeneous transition metal
Molecular FrameworkNot Available
External DescriptorsNot Available
Ontology
Disposition

Biological location:

Physical Properties
StateSolid
Experimental Properties
PropertyValueReference
Melting Point2477 °CNot Available
Boiling Point4744 °CNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Predicted Properties
PropertyValueSource
logP0ChemAxon
pKa (Strongest Acidic)3.09ChemAxon
Physiological Charge5ChemAxon
Hydrogen Acceptor Count0ChemAxon
Hydrogen Donor Count0ChemAxon
Polar Surface Area0 ŲChemAxon
Rotatable Bond Count0ChemAxon
Refractivity0 m³·mol⁻¹ChemAxon
Polarizability1.78 ųChemAxon
Number of Rings0ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectra
SpectraNot Available
Biological Properties
Cellular LocationsNot Available
Biospecimen Locations
  • Blood
  • Saliva
Tissue LocationsNot Available
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected and Quantified0.00043-0.00500 uMAdult (>18 years old)Both
Normal
details
SalivaDetected and Quantified0.008 +/- 0.006 uMAdult (>18 years old)BothNormal
    • Zerihun T. Dame, ...
details
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FoodDB IDNot Available
KNApSAcK IDNot Available
Chemspider IDNot Available
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound3863468
PDB IDNot Available
ChEBI IDNot Available
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General ReferencesNot Available