Used in biochemical research to study enzyme activity, particularly those involved in sulfur metabolism. It serves as a substrate for enzymes like mercaptopyruvate sulfurtransferase, aiding in the understanding of detoxification processes and sulfur transfer mechanisms. Also employed in the synthesis of various organic compounds, including pharmaceuticals and agrochemicals, due to its reactive thiol group. Additionally, it has potential applications in developing treatments for conditions related to oxidative stress and heavy metal poisoning.