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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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Term paths to the root
Path 1
Term Annotations click to browse term
  CHEBI ontology 19775
    chemical entity 19775
      molecular entity 19774
        main group molecular entity 19665
          gas molecular entity 17766
            ((13)C)carbon dioxide 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19775
    subatomic particle 19774
      composite particle 19774
        hadron 19774
          baryon 19774
            nucleon 19774
              atomic nucleus 19774
                atom 19774
                  main group element atom 19665
                    p-block element atom 19665
                      carbon group element atom 19584
                        carbon atom 19574
                          organic molecular entity 19574
                            heteroorganic entity 19215
                              organochalcogen compound 18973
                                organooxygen compound 18906
                                  carbon oxide 115
                                    ((13)C)carbon dioxide 0
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