6-Chlorohexanoic acid is primarily used as an intermediate in organic synthesis, particularly in the production of pharmaceuticals and agrochemicals. Its structure allows it to act as a precursor for the synthesis of various compounds, including active pharmaceutical ingredients. It is also employed in the preparation of polymers and specialty chemicals, where its chloro and carboxyl functional groups enable further chemical modifications. Additionally, it finds use in research and development for creating novel compounds with potential applications in medicine and materials science.