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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:44880 term browser browse the term
Definition:A polyatomic cation consisting of four phenyl groups attached to a central phosphonium.
Synonyms:exact_synonym: tetraphenylphosphanium;   tetraphenylphosphorus(1+)
 related_synonym: Formula=C24H20P;   InChI=1S/C24H20P/c1-5-13-21(14-6-1)25(22-15-7-2-8-16-22,23-17-9-3-10-18-23)24-19-11-4-12-20-24/h1-20H/q+1;   InChIKey=USFPINLPPFWTJW-UHFFFAOYSA-N;   PPh4(+);   SMILES=c1ccc(cc1)[P+](c1ccccc1)(c1ccccc1)c1ccccc1
 alt_id: CHEBI:44877;   CHEBI:9502
 xref: CAS:18198-39-5;   DrugBank:DB02791;   Gmelin:36323;   KEGG:C11152;   PDBeChem:P4P;   PMID:19722701;   PMID:20488669;   PMID:20658137;   PMID:21259234;   Reaxys:3910926

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Term paths to the root
Path 1
Term Annotations click to browse term
  CHEBI ontology 19787
    chemical entity 19787
      atom 19784
        nonmetal atom 19659
          phosphorus atom 9532
            phosphorus molecular entity 9532
              tetraphenylphosphonium 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19787
    subatomic particle 19784
      composite particle 19784
        hadron 19784
          baryon 19784
            nucleon 19784
              atomic nucleus 19784
                atom 19784
                  main group element atom 19672
                    main group molecular entity 19672
                      s-block molecular entity 19430
                        hydrogen molecular entity 19420
                          hydrides 18686
                            inorganic hydride 17411
                              pnictogen hydride 17383
                                phosphorus hydride 6
                                  phosphonium 0
                                    tetraphenylphosphonium 0
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