1,4-Dideoxy-1,4-imino-D-arabinitol hydrochloride is primarily used in biochemical research as an inhibitor of glycosidase enzymes. These enzymes play a crucial role in the breakdown of complex carbohydrates, and by inhibiting them, this compound helps in studying metabolic pathways related to carbohydrate processing. It is particularly valuable in understanding diseases like diabetes and lysosomal storage disorders, where glycosidase activity is dysregulated. Additionally, it serves as a tool in the development of therapeutic agents targeting glycosidase-related conditions. Its application extends to the study of viral infections, as some viruses rely on glycosidases for replication, making it a potential candidate for antiviral research.