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Methyl 3-amino-4-chloro-1-benzothiophene-2-carboxylate

Methyl 3-amino-4-cyano-5-piperidinothiophene-2-carboxylate

Methyl 3-amino-4-ethylthiophene-2-carboxylate

Methyl 3-amino-4-fluorobenzenecarboxylate

Methyl 3-amino-4-fluorobenzo[b]thiophene-2-carboxylate

Methyl 3-amino-4-hydroxybenzoate

Methyl 3-amino-4-iodobenzoate

Methyl 3-amino-5-(4-isobutylphenyl)thiophene-2-carboxylate

Methyl 3-amino-5-(thien-3-yl)thiophene-2-carboxylate

Methyl 3-amino-5-methoxybenzoate