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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:cuprous oxide
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Accession:CHEBI:81908 term browser browse the term
Definition:Any copper oxide in which the metal is in the +1 oxidation state.
Synonyms:exact_synonym: copper(1+) oxidocopper
 related_synonym: Copper (I) oxide;   Cu2O;   Formula=Cu2O;   InChI=1S/2Cu.O/q2*+1;-2;   InChIKey=KRFJLUBVMFXRPN-UHFFFAOYSA-N;   SMILES=[O-2].[Cu+].[Cu+];   copper(1+) oxide;   dicopper monoxide
 alt_id: CHEBI:47292
 xref: CAS:1317-39-1;   KEGG:C18714;   PDBeChem:C2O;   PMID:26116793;   PMID:26369199;   PMID:26467678;   PMID:27061060;   PMID:27103492;   PMID:27196539;   PMID:27232100;   PMID:27609560;   PMID:27649330;   PMID:27843139;   Reaxys:23129941;   Reaxys:4933945;   Wikipedia:Copper(I)_oxide

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Term paths to the root
Path 1
Term Annotations click to browse term
  CHEBI ontology 24838
    role 24758
      biological role 24727
        biochemical role 24206
          cofactor 16764
            copper(1+) 4
              cuprous oxide 0
                cuprous oxide nanoparticle 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 24838
    subatomic particle 24799
      composite particle 24799
        hadron 24799
          baryon 24799
            nucleon 24799
              atomic nucleus 24799
                atom 24799
                  main group element atom 24667
                    p-block element atom 24667
                      chalcogen 23807
                        oxygen atom 23692
                          oxygen molecular entity 23692
                            oxide 12693
                              inorganic oxide 8140
                                metal oxide 253
                                  copper oxide 0
                                    cuprous oxide 0
                                      cuprous oxide nanoparticle 0
paths to the root