Methyl 5-broMo-4-fluorothiophene-2-carboxylate

Methyl 5-bromo-4-fluoro-2-thiophenecarboxylate

5-Bromo-4-fluoro-2-thiophenecarboxylic acid methyl ester

2-Thiophenecarboxylic acid, 5-bromo-4-fluoro-, methyl ester