Norlaudanosine hydrochloride is primarily used as an intermediate in the synthesis of various benzylisoquinoline alkaloids, which are important in pharmaceutical research. It plays a key role in the development of opioid receptor ligands and other neuroactive compounds. Due to its structural properties, it is utilized in studies related to pain modulation and the design of analgesic drugs. It also serves as a building block in the preparation of tetrahydroisoquinoline derivatives with potential biological activity, including those being investigated for anticancer and antimicrobial properties. Its application extends to neuroscience research, where it helps in understanding neurotransmitter interactions and receptor binding mechanisms.