4-Bromothiophene-3-carboxylic acid (CAS NO.16694-17-0), its Synonyms are 4-Bromo-3-thenoic acid ; 4-Bromothiophene-3-carvoxylic acid ; 4-Bromo-3-thiophenecarboxylicacid ; 4-Bromothiophenecarboxylicacid .