Ethyl 2-thiophenecarboxylate
Methyl 5-Methoxy-2-thiophenecarboxylate
Methyl 3-amino-5-iodo-2-thiophenecarboxylate
Methyl 4-bromo-5-(difluoromethyl)thiophene-2-carboxylate
Methyl 2-amino-4-(pyridin-2-yl)thiophene-3-carboxylate
