Methyl 3-bromo-5-nitrobenzoate is primarily used as an intermediate in organic synthesis, particularly in the production of pharmaceuticals and agrochemicals. Its structure, featuring both bromo and nitro functional groups, makes it a versatile building block for constructing more complex molecules. It is often employed in coupling reactions, such as Suzuki or Sonogashira reactions, to create compounds with potential biological activity. Additionally, it serves as a precursor in the synthesis of dyes and pigments due to its aromatic nitro group, which can be further modified. Its ester group also allows for easy transformation into other derivatives, enhancing its utility in research and industrial applications.