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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:641 term browser browse the term
Definition:A pyridinium ion that is N-methylpyridinium having a phenyl substituent at the 4-position.
Synonyms:related_synonym: 1-Methyl-4-phenylpyridinium;   Cyperquat;   Formula=C12H12N;   InChI=1S/C12H12N/c1-13-9-7-12(8-10-13)11-5-3-2-4-6-11/h2-10H,1H3/q+1;   InChIKey=FMGYKKMPNATWHP-UHFFFAOYSA-N;   MPP+;   N-Methyl-4-phenylpyridine;   N-Methyl-4-phenylpyridinium ion;   SMILES=C[n+]1ccc(cc1)-c1ccccc1
 xref: Beilstein:1618932;   CAS:48134-75-4;   Gmelin:329608;   KEGG:C11310
 xref_mesh: MESH:D015655
 xref: PMID:10388522;   PMID:10659990;   PMID:10969076;   PMID:11489261;   PMID:12523938;   PMID:12535785;   PMID:12695348;   PMID:14511319;   PMID:14742448;   PMID:15950286;   PMID:16820197;   PMID:16822645;   PMID:17055540;   PMID:17391768;   PMID:17395226;   PMID:18565546;   PMID:26745278;   PMID:8923521;   PMID:8962685;   PPDB:2881;   Reaxys:1618932;   Wikipedia:MPP%2B

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      CHEBI ontology 20059
        role 20009
          application 19747
            pesticide 17237
              herbicide 13037
                N-methyl-4-phenylpyridinium 2402
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      CHEBI ontology 20059
        subatomic particle 20056
          composite particle 20056
            hadron 20056
              baryon 20056
                nucleon 20056
                  atomic nucleus 20056
                    atom 20056
                      main group element atom 19956
                        p-block element atom 19956
                          p-block molecular entity 19956
                            carbon group molecular entity 19882
                              organic molecular entity 19873
                                organic ion 9180
                                  organic cation 8121
                                    pyridinium ion 2414
                                      N-methyl-4-phenylpyridinium 2402
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