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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:6805 term browser browse the term
Definition:A tetracycline that is the 6-methylene analogue of oxytetracycline, obtained by formal dehydration at position 6.
Synonyms:exact_synonym: (4S,4aR,5S,5aR,12aS)-4-(dimethylamino)-3,5,10,12,12a-pentahydroxy-6-methylene-1,11-dioxo-1,4,4a,5,5a,6,11,12a-octahydrotetracene-2-carboxamide
 related_synonym: 6-Demethyl-6-deoxy-5-hydroxy-6-methylenetetracycline;   6-Deoxy-6-demethyl-6-methylene-5-oxytetracycline;   6-Methylene-5-hydroxytetracycline;   6-Methylene-5-oxytetracycline;   6-Methyleneoxytetracycline;   Formula=C22H22N2O8;   InChI=1S/C22H22N2O8/c1-7-8-5-4-6-9(25)11(8)16(26)12-10(7)17(27)14-15(24(2)3)18(28)13(21(23)31)20(30)22(14,32)19(12)29/h4-6,10,14-15,17,25,27-29,32H,1H2,2-3H3,(H2,23,31)/t10-,14-,15+,17+,22+/m1/s1;   InChIKey=MHIGBKBJSQVXNH-IWVLMIASSA-N;   Methacyclinum;   Methylenecycline;   Rondomycin;   SMILES=[H][C@@]12[C@@H](O)[C@]3([H])C(=C)c4cccc(O)c4C(=O)C3=C(O)[C@]1(O)C(=O)C(C(N)=O)=C(O)[C@H]2N(C)C;   Tri-methacycline;   metaciclina;   metacycline;   metacyclinum
 xref: CAS:914-00-1;   DrugBank:DB00931;   Drug_Central:1727;   KEGG:C07654;   KEGG:D04972;   PMID:1650428;   Patent:US2984686;   Reaxys:2230316;   Wikipedia:Methacycline

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  CHEBI ontology 19853
    role 19804
      biological role 19804
        biochemical role 19339
          metabolite 19319
            tetracyclines 493
              methacycline 0
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  CHEBI ontology 19853
    subatomic particle 19851
      composite particle 19851
        hadron 19851
          baryon 19851
            nucleon 19851
              atomic nucleus 19851
                atom 19851
                  main group element atom 19744
                    p-block element atom 19744
                      carbon group element atom 19650
                        carbon atom 19639
                          organic molecular entity 19639
                            organic group 18550
                              organic divalent group 18541
                                organodiyl group 18541
                                  carbonyl group 18447
                                    carbonyl compound 18447
                                      carboxylic acid 18125
                                        carboacyl group 17383
                                          univalent carboacyl group 17383
                                            carbamoyl group 17166
                                              carboxamide 17166
                                                primary carboxamide 3798
                                                  methacycline 0
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