(R)-3-Amino-2-methylpropanoic acid hydrochloride is primarily used in the synthesis of chiral compounds and pharmaceutical intermediates. Its enantiomeric purity makes it valuable in the production of drugs that require specific stereochemistry for optimal efficacy. It is often employed in the development of beta-amino acids, which are key components in peptide-based therapeutics and enzyme inhibitors. Additionally, this compound serves as a building block in organic synthesis, particularly in the creation of molecules with potential biological activity. Its application extends to research in medicinal chemistry, where it aids in the design and optimization of new drug candidates targeting various diseases.