Used primarily as an alkylating agent in organic synthesis, it introduces the 2-methylbutyl group into molecules, making it valuable in the production of pharmaceuticals, agrochemicals, and specialty chemicals. It serves as an intermediate in the synthesis of dyes, fragrances, and rubber additives. Due to its reactivity, it is also employed in the preparation of Grignard reagents, which are key in forming carbon-carbon bonds. Its selective reactivity makes it suitable for controlled reactions in complex molecule assembly.