2-ethynyl-5-methoxycyclohexa-2,5-diene-1,4-dione

3-(溴甲基)-1,2,4,5-四甲氧基苯

4-(4-chloroanilino)-5-methoxycyclohexa-3,5-diene-1,2-dione

4-(4-bromoanilino)-5-methoxycyclohexa-3,5-diene-1,2-dione

4-methoxy-5-(4-methylanilino)cyclohexa-3,5-diene-1,2-dione