4,6-Dibromodibenzo[b,d]furan
3,7-Dibromodibenzo[b,d]thiophene
2,7-Dibromodibenzo[b,d]thiophene
3,7-Dibromodibenzo[b,d]furan
4,6-Dibromodibenzo[b,d]thiophene
2,8-Dibromodibenzo[b,d]furan
2,8-Dibromodibenzo[b,d]thiophene
6,11-Dibromodibenzo[f,h]quinoxaline
