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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 19770
    role 19720
      application 19411
        pesticide 16587
          herbicide 11819
            N-methyl-4-phenylpyridinium 2392
Path 2
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  CHEBI ontology 19770
    subatomic particle 19768
      composite particle 19768
        hadron 19768
          baryon 19768
            nucleon 19768
              atomic nucleus 19768
                atom 19768
                  main group element atom 19662
                    p-block element atom 19662
                      p-block molecular entity 19662
                        carbon group molecular entity 19580
                          organic molecular entity 19571
                            organic ion 8447
                              organic cation 7301
                                pyridinium ion 2404
                                  N-methyl-4-phenylpyridinium 2392
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