5,7-Dibromo-2,3-dihydrobenzo[b]furan

5,7-Dibromo-2,3-dihydrobenzo[b]furan corresponds to CAS 123266-59-1 and formula C8H6Br2O. PubChem resolves that CAS to one compound, CID 2779135, with the title 5,7-Dibromo-2,3-dihydrobenzofuran. The bracketed fusion style used on the page occurs in the official synonym list for the same entry. Both expressions therefore identify one oxygen-containing fused bicyclic graph with bromine atoms at positions 5 and 7.

Verified SMILES C1COC2=C1C=C(C=C2Br)Br shows the partially saturated oxygen ring fused to a dibrominated benzene portion. InChIKey NJQJUJHJJZMVNB-UHFFFAOYSA-N is identical for the site and PubChem representation. The formula confirms two bromines and one oxygen, whereas the ring closures in the SMILES specify how the dihydrofuran shares atoms with benzene. Those connections separate this page from unfused or differently brominated alternatives.

An exact comparison should include CAS 123266-59-1, CID 2779135, and the full 5,7-dibromo designation. If the compound arrives under the unbracketed dihydrobenzofuran title, its structure drawing can be matched against the page SMILES and InChIKey. The fused junction, oxygen position, and both brominated aromatic atoms must align across those references. The saturated ring segment supplies another graph-level checkpoint. This identity-focused description does not assign properties that are not stated in the validated PubChem and Rlavie fields.