Methyl 4-bromo-2-naphthoate is primarily used as an intermediate in organic synthesis, particularly in the production of pharmaceuticals and agrochemicals. Its structure allows it to participate in various chemical reactions, such as coupling reactions, which are essential for creating complex molecules. The compound is also utilized in the development of dyes and pigments due to its naphthalene core, which provides stability and color properties. Additionally, it serves as a building block in the synthesis of compounds with potential biological activity, making it valuable in medicinal chemistry research.