EMBL-EBI | Chemical Biology | ChEBI

Example searches: iron*, InChI=1S/CH4O/c1-2/h2H,1H3, caffeine | Advanced Search

CHEBI:33815 - oxygen-18 atom

ChEBI IDCHEBI:33815
ChEBI Nameoxygen-18 atom
Stars
DefinitionThe stable isotope of oxygen with relative atomic mass 17.999160 and 0.205 atom percent natural abundance.
Last Modified5 March 2010
SubmitterKirill Degtyarenko
DownloadsMolfile
Formula[18O]
Net Charge0
Average Mass17.999
Monoisotopic Mass17.99916
SMILES[18O]
InChIInChI=1S/O/i1+2
InChIKeyQVGXLLKOCUKJST-NJFSPNSNSA-N
Roles Classification
Biological Role:
macronutrient  Any nutrient required in large quantities by organisms throughout their life in order to orchestrate a range of physiological functions. Macronutrients are usually chemical elements (carbon, hydrogen, nitrogen, oxygen, phosphorus and sulfur) that humans consume in the largest quantities. Calcium, sodium, magnesium and potassium are sometimes included as macronutrients because they are required in relatively large quantities compared with other vitamins and minerals.
ChEBI Ontology
Outgoing Relation(s)
oxygen-18 atom (CHEBI:33815) is a oxygen atom (CHEBI:25805)
Incoming Relation(s)
(18O)water (CHEBI:33813) has part oxygen-18 atom (CHEBI:33815)
IUPAC Name 
oxygen-18
Synonyms  Source
188OIUPAC
18OIUPAC
oxygen, isotope of mass 18ChemIDplus
heavy oxygenChEBI
schwerer SauerstoffChEBI
oxygen-18ChEBI
Registry NumbersSources
Gmelin:17562Gmelin
CAS:14797-71-8ChemIDplus