DL-Ethionine is primarily used in research settings to study liver function and disease. It is known to induce fatty liver and liver damage in experimental models, making it a valuable tool for understanding hepatic pathologies such as steatosis and cirrhosis. By mimicking the effects of certain liver disorders, it helps researchers investigate the mechanisms of liver injury and test potential therapeutic interventions. Additionally, DL-Ethionine is utilized in studies exploring the role of methionine metabolism in cellular processes, including protein synthesis and methylation reactions. Its ability to interfere with these pathways provides insights into metabolic dysregulation and its impact on health.