4-Amino-2-chloropyrimidine

2-Hydroxy-4-hydrazinopyrimidine

2-Amino-5-bromo-2'-chlorobenzophenone

4-Chlorophthalic anhydride

2-Amino-4-fluorobenzoic acid

2-Amino-5-trifluoromethylpyridine

5-Amino-2-pyridinecarboxylic acid

Methyl 2-formyl-4-thiophenecarboxylate