tert-Butyl ((3R,4R)-4-fluoropyrrolidin-3-yl)carbamate hydrochloride is primarily used in pharmaceutical research and development, particularly in the synthesis of biologically active compounds. It serves as a key intermediate in the production of drugs targeting central nervous system disorders, such as Parkinson's disease and schizophrenia, due to its structural similarity to neurotransmitters and its ability to modulate receptor activity. Additionally, it is utilized in the development of enzyme inhibitors and other therapeutic agents, where its fluorinated pyrrolidine moiety enhances binding affinity and metabolic stability. This compound is also valuable in medicinal chemistry for exploring structure-activity relationships and optimizing drug candidates.