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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 21797
    role 21776
      biological role 21774
        biochemical role 21005
          cofactor 15940
            copper(1+) 4
              cuprous oxide 0
                cuprous oxide nanoparticle 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 21797
    subatomic particle 21783
      composite particle 21783
        hadron 21783
          baryon 21783
            nucleon 21783
              atomic nucleus 21783
                atom 21783
                  main group element atom 21700
                    p-block element atom 21700
                      chalcogen 20867
                        oxygen atom 20845
                          oxygen molecular entity 20845
                            oxide 12365
                              inorganic oxide 7818
                                metal oxide 248
                                  copper oxide 0
                                    cuprous oxide 0
                                      cuprous oxide nanoparticle 0
paths to the root