Used primarily in pharmaceutical research, 3-Methylazepan-4-one hydrochloride serves as a key intermediate in the synthesis of various bioactive compounds. It is particularly valuable in the development of central nervous system (CNS) drugs, where it contributes to the creation of molecules targeting neurological disorders. Its structural properties make it suitable for exploring potential treatments for conditions like anxiety, depression, and neurodegenerative diseases. Additionally, it is employed in organic chemistry studies to investigate novel reaction pathways and optimize synthetic methodologies for complex organic molecules.