aromatic ether organobromine compound 2,2',3,4,4',5',6-Heptabromodiphenyl ether HMDB:HMDB0037546 CAS:207122-16-5 1,2,3,5-Tetrabromo-4-(2,4,5-tribromophenoxy)-benzene 722.48000 0 CHEBI:81537 BDE 183 chebi_ontology Brc1cc(Br)c(Oc2c(Br)cc(Br)c(Br)c2Br)cc1Br ILPSCQCLBHQUEM-UHFFFAOYSA-N C12H3Br7O 715.44676 KEGG:C18140 InChI=1S/C12H3Br7O/c13-4-1-6(15)9(3-5(4)14)20-12-8(17)2-7(16)10(18)11(12)19/h1-3H