Azepan-3-one hydrochloride is utilized in pharmaceutical research as a key intermediate in the synthesis of various bioactive compounds. Its structure is particularly valuable in the development of potential therapeutic agents targeting neurological disorders, such as anxiety and depression, due to its ability to interact with specific receptors in the brain. Additionally, it serves as a building block in organic chemistry for creating more complex molecules with potential applications in drug discovery and development. Researchers also explore its use in designing enzyme inhibitors, which can be critical in treating diseases related to enzyme dysfunction. Its versatility makes it a significant compound in medicinal chemistry and pharmacology.