Synonyms: | (+)-CIS-2-OXABICYCLO[3.3.0]OCT-6-EN-3-ONE;(3AS,6AR)-3,3A,6,6A-TETRAHYDRO-2H-1-OXAPENTALEN-2-ONE;(3AS,6AR)-3,3A,6,6A-TETRAHYDRO-2H-CYCLOPENTA[B]FURAN-2-ONE;(1R,5S)-(+)-2-OXABICYCLO[3.3.0]OCT-6-EN-3-ONE;(1R 5S)-2-OXABICYCLO(3.3.0)OCT-6-EN-;2-oxabicyclo[3.3.0]oct-6-en-3-one;(1R,5S)-2-Oxabicyclo[3.3.0]oct-6-en-3-one, (3aS,6aR)-3,3a,6,6a-Tetrahydro-2H-1-oxapentalen-2-one, (3aS,6aR)-3,3a,6,6a-Tetrahydro-2H-cyclopenta[b]furan-2-one;(3aS,6aR)-3,3a,6,6a-Tetrahydro-2H-1-oxapentalen-2-one, (3aS,6aR)-3,3a,6,6a-Tetrahydro-2H-cyclopenta[b]furan-2-one |