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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.

Term:((13)C)carbon dioxide
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Accession:CHEBI:139538 term browser browse the term
Definition:A (13)C-modified compound that is carbon dioxide in which the carbon is present as its (13)C isotope.
Synonyms:exact_synonym: ((13)C)methanedione
 related_synonym: (13)CO2;   Formula=[13C]O2;   InChI=1S/CO2/c2-1-3/i1+1;   InChIKey=CURLTUGMZLYLDI-OUBTZVSYSA-N;   SMILES=O=[13C]=O
 xref: PMID:11551844;   PMID:24919663;   PMID:25960807;   PMID:26543443;   PMID:26738199;   PMID:28644917;   PMID:28771732;   PMID:28841262;   Reaxys:3087932

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Path 1
Term Annotations click to browse term
  CHEBI ontology 19659
    chemical entity 19658
      molecular entity 19658
        main group molecular entity 19649
          gas molecular entity 18170
            ((13)C)carbon dioxide 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19659
    subatomic particle 19658
      composite particle 19658
        hadron 19658
          baryon 19658
            nucleon 19658
              atomic nucleus 19700
                atom 19658
                  main group element atom 19607
                    p-block element atom 19607
                      carbon group element atom 19550
                        carbon atom 19547
                          organic molecular entity 19588
                            heteroorganic entity 19296
                              organochalcogen compound 19093
                                organooxygen compound 19036
                                  carbon oxide 118
                                    ((13)C)carbon dioxide 0
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