2-丁烯-1-基琥珀酸酐

4,9-diphenyl-3a,4,9,9a-tetrahydro-4,9-epoxynaphtho[2,3-c]furan-1,3-dione

(E)-4-(9H-fluoren-1-ylamino)-4-oxobut-2-enoic acid

2-methyl-3a,4,5,6,7,7a-hexahydro-octahydro-1H-4,7-epoxyisoindole-1,3-dione

1,4-dimethyl-7-oxabicyclo<2.2.1>hept-5-ene-2,3-dicarboxylic anhydride