1-Oxidene 1-Oxindene 2,3-Benzofuran 271-89-6 5-17-02-00003 (Beilstein Handbook Reference) AI3-17613 BENZOFURAN BRN 0107704 Benzo(b)furan Benzofuran (IUPAC) Benzofurfuran CCRIS 2384 Coumaron Coumarone Cumarone EINECS 205-982-6 HSDB 4173 NCI-C56166 NSC 1255