(R)-2-Amino-2-phenylacetic acid hydrochloride is primarily used in the pharmaceutical industry as a chiral building block for the synthesis of various drugs. It is particularly valuable in the production of enantiomerically pure compounds, which are crucial for developing medications with higher efficacy and fewer side effects. This compound is often employed in the preparation of antibiotics, such as amoxicillin and ampicillin, where its chiral nature ensures the desired biological activity. Additionally, it serves as a key intermediate in the synthesis of peptide-based drugs and other bioactive molecules, contributing to advancements in targeted therapies and personalized medicine. Its role in asymmetric synthesis also makes it important in research and development for creating novel therapeutic agents.