(+/-)-cis-Bicyclo[3.2.0]hept-2-en-6-one13173-09-6100 % similar (3Ar,6as)-3,3A,6,6A-tetrahydro-2H-cyclopenta[B]furan-2-one43119-28-441 % similar 7,7-Dichlorobicyclo[3.2.0]hept-2-en-6-one5307-99-335 % similar Rel-(1R,2S)-4-cyclohexene-1,2-dicarboxylic acid2305-26-234 % similar 1,2,3,6-Tetrahydrophthalic anhydride85-43-834 % similar Tetrahydrophthalic anhydride935-79-534 % similar 3-Methyltetrahydrophthalic anhydride5333-84-632 % similar