1-Chloro-3-phenylpropane is primarily used as an intermediate in organic synthesis. It plays a key role in the production of various pharmaceuticals, agrochemicals, and fine chemicals. The compound is often utilized in alkylation reactions, where it introduces the phenylpropyl group into target molecules. Additionally, it serves as a building block in the synthesis of fragrances and flavoring agents, contributing to the development of aromatic compounds. Its application extends to research laboratories, where it is employed in the study of chemical reactions and the development of new synthetic pathways.