has role biological pigment polyphenol organic heterotricyclic compound ring assembly organonitrogen heterocyclic compound enone ultraviolet filter bacterial metabolite scytonemin (3E,3'E)-3,3'-bis[(4-hydroxyphenyl)methylidene][1,1'-bicyclopenta[b]indole]-2,2'(3H,3'H)-dione 544.142 544.556 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. 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 C36H20N2O4 CAS:152075-98-4 CGZKSPLDUIRCIO-RPCRKUJJSA-N CHEBI:90127 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+ KNApSAcK:C00045068 PMID:21501195 PMID:22688245 PMID:24111939 PMID:25056905 PMID:25226055 PMID:25368346 PMID:26013282 PMID:26452010 PMID:8405307 Reaxys:22043325 Wikipedia:Scytonemin chebi_ontology