3-bromo-2-phenylfuro[3,2-b]quinoxaline

3-methylsulfanyl-6-phenylthieno[2,3-e][1,2,4]triazine

6-phenyl-2H-thieno[2,3-e][1,2,4]triazine-3-thione

5-phenylfuran-2,3-dione