Ethyl sarcosinate hydrochloride is widely used in the synthesis of peptides and proteins, serving as a building block in organic chemistry. It is particularly valuable in the production of surfactants and detergents due to its amphiphilic nature, which enhances cleaning efficiency. In the pharmaceutical industry, it acts as an intermediate in the development of various drugs, including those targeting neurological and cardiovascular conditions. Additionally, it finds application in cosmetic formulations, where it functions as a conditioning agent to improve the texture and feel of hair and skin products. Its role in enhancing solubility and stability makes it a useful component in chemical research and industrial processes.