(R)-3-Aminobutanoic acid hydrochloride is primarily used in the pharmaceutical industry as a chiral building block for the synthesis of various bioactive compounds. It serves as a key intermediate in the production of drugs targeting neurological disorders, such as epilepsy and anxiety, due to its structural similarity to gamma-aminobutyric acid (GABA), a major inhibitory neurotransmitter in the central nervous system. Additionally, it is utilized in research and development for creating enantiomerically pure substances, which are critical for studying the pharmacological effects of specific stereoisomers. Its role in asymmetric synthesis also makes it valuable for producing fine chemicals and active pharmaceutical ingredients (APIs) with high optical purity.