(2-Amino-2,3-dihydro-1H-inden-2-yl)phosphonic acid hydrochloride is primarily used in the field of medicinal chemistry and drug development. It serves as a key intermediate or building block in the synthesis of biologically active compounds, particularly those targeting neurological disorders. Its structure is often exploited in the design of molecules that interact with glutamate receptors, which are critical in the regulation of neurotransmission. This compound is also studied for its potential in developing treatments for conditions like epilepsy, Alzheimer's disease, and other neurodegenerative diseases. Additionally, it may be utilized in research focused on enzyme inhibition, particularly for enzymes involved in metabolic pathways relevant to disease states.