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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:34905 term browser browse the term
Definition:An organic cation that consists of 4,4'-bipyridine bearing two N-methyl substituents loctated at the 1- and 1'-positions.
Synonyms:exact_synonym: 1,1'-dimethyl-[4,4'-bipyridin]-1,1'-diium
 related_synonym: 1,1'-Dimethyl-4,4'-bipyridinium;   1,1'-dimethyl-4,4'-bipyridyldiylium;   Formula=C12H14N2;   InChI=1S/C12H14N2/c1-13-7-3-11(4-8-13)12-5-9-14(2)10-6-12/h3-10H,1-2H3/q+2;   InChIKey=INFDPOAKFNIJBF-UHFFFAOYSA-N;   N,N'-dimethyl-4,4'-bipyridinium;   N,N'-dimethyl-4,4'-bipyridinium dication;   SMILES=C[n+]1ccc(cc1)-c1cc[n+](C)cc1;   dimethyl viologen;   methyl viologen ion(2+);   paraquat dication;   paraquat ion
 xref: Beilstein:3590305;   CAS:4685-14-7;   Chemspider:15147;   FooDB:FDB011120;   Gmelin:51125;   KEGG:C14701
 xref_mesh: MESH:D010269
 xref: PMID:11349957;   PMID:18620719;   PMID:20377249;   PMID:20582739;   PMID:21151885;   PMID:21236547;   PMID:21300143;   PMID:21318114;   PMID:21429624;   PMID:21493003;   PMID:21598522;   PMID:21616728;   PMID:21619794;   PMID:21619822;   PMID:21750730;   PMID:21777615;   PMID:21787677;   PMID:21802509;   PPDB:505;   Pesticides:paraquat;   Reaxys:3590305

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    Path 1
    Term Annotations click to browse term
      CHEBI ontology 19795
        role 19746
          application 19492
            pesticide 17131
              herbicide 13003
                paraquat 2903
                  paraquat dichloride 0
    Path 2
    Term Annotations click to browse term
      CHEBI ontology 19795
        subatomic particle 19794
          composite particle 19794
            hadron 19794
              baryon 19794
                nucleon 19794
                  atomic nucleus 19794
                    atom 19794
                      main group element atom 19693
                        p-block element atom 19693
                          carbon group element atom 19614
                            carbon atom 19604
                              organic molecular entity 19604
                                organic molecule 19545
                                  organic cyclic compound 19339
                                    organic heterocyclic compound 18579
                                      organonitrogen heterocyclic compound 17659
                                        bipyridines 2944
                                          bipyridine 2922
                                            4,4'-bipyridine 2903
                                              paraquat 2903
                                                paraquat dichloride 0
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