Tetrahydrofurfuryl bromide is primarily used as an intermediate in organic synthesis. It serves as an alkylating agent in the preparation of pharmaceuticals, agrochemicals, and specialty polymers. Its reactivity allows for the introduction of the tetrahydrofurfuryl group into various molecules, enhancing solubility or altering biological activity in drug development. It is also employed in the synthesis of surfactants and functionalized materials where ether or amine derivatives are needed. Due to the presence of the bromide leaving group, it readily participates in substitution reactions, making it valuable in multi-step synthetic routes.