Used primarily in pharmaceutical research, 4-Cyclopropylaniline hydrochloride serves as a key intermediate in the synthesis of various bioactive compounds. Its cyclopropyl group enhances the stability and binding affinity of molecules, making it valuable in developing drugs targeting neurological disorders and cardiovascular diseases. Additionally, it finds application in organic synthesis, particularly in constructing complex heterocyclic structures for potential therapeutic agents. Its hydrochloride form ensures better solubility and handling in experimental procedures.