Synonyms: 4,5,6,7-Tetrahydro-4-oxobenzo[b]furan;4,5,6,7-Tetrahydro-4-oxobenzofuran;4,5,6,7-Tetrahydrobenzofuran-4-one;4-Oxo-4,5,6,7-tetrahydrobenzo[b]furan;4-Oxo-4,5,6,7-tetrahydrobenzofuran;6,7-Dihydro-1-benzofuran-4(5H)-one;6,7-Dihydro-5H-benzofuran-4-one;6,7-Dihydrobenzo[b]furan-4(5H)-one;6,7-Dihydrobenzofuran-4(5H)-one;