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The Chemical Entities of Biological Interest (ChEBI) ontology is downloaded weekly from EMBL-EBI at The data is made available under the Creative Commons License (CC BY 3.0, For more information see: Degtyarenko et al. (2008) ChEBI: a database and ontology for chemical entities of biological interest. Nucleic Acids Res. 36, D344–D350.

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Accession:CHEBI:50076 term browser browse the term
Definition:A synthetic radioactive isotope of chromium having a half-life of 27.7 days and decaying by electron capture with emission of gamma rays (0.32 MeV); it is used to label red blood cells for measurement of mass or volume, survival time, and sequestration studies, for the diagnosis of gastrointestinal bleeding, and to label platelets to study their survival.
Synonyms:related_synonym: (51)24Cr;   (51)Cr;   51Cr;   Chromium, isotope of mass 51;   Formula=[51Cr];   InChI=1S/Cr/i1-1;   InChIKey=VYZAMTAEIAYCRO-BJUDXGSMSA-N;   SMILES=[51Cr]
 xref: CAS:14392-02-0

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Path 1
Term Annotations click to browse term
  CHEBI ontology 19762
    role 19708
      application 19396
        label 3316
          radioactive label 0
            chromium-51 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19762
    subatomic particle 19760
      composite particle 19760
        hadron 19760
          baryon 19760
            nucleon 19760
              atomic nucleus 19760
                atom 19760
                  metal atom 17347
                    transition element atom 16841
                      d-block element atom 16832
                        chromium group element atom 7533
                          chromium atom 6338
                            chromium-51 0
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