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Methyl 4-bromothiophene-2-carboxylate

Thiophene-2,3-dicarboxylic acid

Methyl 3-amino-4-phenylthiophene-2-carboxylate

2-(3-(Bromomethyl)phenyl)thiophene

Methyl 3-hydroxy-5-nitro-2-thiophenecarboxylate;3-hydroxy-5-nitrothiophene-2-carboxylic acid methyl ester

5-Isobutylthiophene-2-sulfonyl chloride

N-allylmaleimide

Pyrrole-3-carboxylic acid

3,5-Dimethylpyrrole-2-carboxylic acid;3,5-dimethyl-1H-pyrrole-2-carboxylic acid