5-Bromothiophene-2-carboxylic acid is a versatile heterocyclic building block extensively used in pharmaceutical synthesis, particularly for sulfonamide-based antimicrobial agents. This compound exhibits a melting point of 140°C and boiling point of 318.9±27.0°C at 760 mmHg, with a density of 1.923 g/cm³ and refractive index of 1.65. The bromine and carboxyl groups enable diverse transformations including nucleophilic substitutions and coupling reactions. Storage should be in sealed containers at room temperature, protected from light and moisture. Safety precautions include wearing protective gloves/eyewear due to potential irritation (GHS Category 2). Its applications span from organic electronics to bioactive molecule development.
