2-Bromo-5-formylbenzoic acid is primarily used as an intermediate in organic synthesis. It plays a significant role in the production of pharmaceuticals, where it serves as a building block for the synthesis of complex molecules. The compound is also utilized in the development of agrochemicals, contributing to the creation of herbicides and pesticides. Additionally, it finds application in material science, particularly in the synthesis of organic electronic materials and polymers. Its functional groups make it a versatile reagent for various chemical reactions, including cross-coupling and condensation reactions, which are essential in the manufacture of fine chemicals and specialty compounds.