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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:90127 term browser browse the term
Definition:A ring assembly obtained by 1,1'-coupling of two molecules of (3E)-3-[(4-hydroxyphenyl)methylidene]cyclopenta[b]indol-2(3H)-one. A UV-screening molecule produced by many strains of cyanobacteria.
Synonyms:exact_synonym: (3E,3'E)-3,3'-bis[(4-hydroxyphenyl)methylidene][1,1'-bicyclopenta[b]indole]-2,2'(3H,3'H)-dione
 related_synonym: Formula=C36H20N2O4;   InChI=1S/C36H20N2O4/c39-21-13-9-19(10-14-21)17-25-33-29(23-5-1-3-7-27(23)37-33)31(35(25)41)32-30-24-6-2-4-8-28(24)38-34(30)26(36(32)42)18-20-11-15-22(40)16-12-20/h1-18,39-40H/b25-17+,26-18+;   InChIKey=CGZKSPLDUIRCIO-RPCRKUJJSA-N;   SMILES=C1(C2=C3C(=NC4=C3C=CC=C4)\\C(\\C2=O)=C/C5=CC=C(C=C5)O)=C6C(=NC7=C6C=CC=C7)\\C(\\C1=O)=C/C8=CC=C(C=C8)O
 xref: CAS:152075-98-4;   KNApSAcK:C00045068;   PMID:21501195;   PMID:22688245;   PMID:24111939;   PMID:25056905;   PMID:25226055;   PMID:25368346;   PMID:26013282;   PMID:26452010;   PMID:8405307;   Reaxys:22043325;   Wikipedia:Scytonemin

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  CHEBI ontology 19853
    role 19804
      biological role 19804
        biophysical role 12649
          biological pigment 1050
            scytonemin 0
Path 2
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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
                                      ketone 16192
                                        alpha,beta-unsaturated ketone 8532
                                          enone 8532
                                            scytonemin 0
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