2-phenyl-1-benzofuran-5-ol

5,8-dimethyl-6-nitro-9H-carbazol-3-ol

4-Hydroxy-2',5'-dimethyl-4'-nitrodiphenylamine

1,4-Dimethyl-3-nitro-6-hydroxy-7-(2-amino-3,6-dimethyl-5-nitrophenyl)carbazole

1,4-Dihydroxy-2,5-bis(2-amino-3,6-dimethyl-5-nitrophenyl)benzene