1,2,3-茚满三酮

7,7-dibromo-8,8-dichlorobicyclo[4.2.0]octa-1,3,5-triene

1,2-bis(ethylenedioxy)benzocyclobutene

Bicyclo[4.2.0]octa-1(6),3-dien-7,8-dion

7,7,8,8-tetrabromobicyclo[4.2.0]octa-1,3,5-triene