5-Bromovaleryl chloride is a chemical compound that functions as an acylating agent in organic synthesis. It is used to introduce the 5-bromovaleryl group into various organic molecules, allowing for the modification of their chemical properties. The mode of action of 5-Bromovaleryl chloride involves the substitution of the hydroxyl group in organic compounds with the 5-bromovaleryl group, leading to the formation of new chemical bonds. This process can be utilized to create novel compounds with specific functional groups for further study and analysis.