2-Amino-3,5-dibromopyrazine

8-Hydroxyquinoline-2-carboxaldehyde

1-Benzothiophene-5-carbaldehyde

2,5-Dimethylthiophene-3-carboxaldehyde

5-Phenyl-2-thiophenecarboxylic acid

Benzo[b]thiophene-2-carboxaldehyde