Taurochenodeoxycholic Acid (Taurochenodeoxycholic Acid, CAS: 516-35-8) is a naturally occurring conjugated bile acid formed by the amide bond linkage between chenodeoxycholic acid and taurine. As a crucial endogenous molecule, it serves not only as a major component of bile but also plays a pivotal role in metabolic regulation. This compound modulates lipid metabolism, glucose homeostasis, and bile acid circulation through activation of nuclear receptor FXR and membrane receptor TGR5. Its unique amphiphilic structure combines the water solubility conferred by the taurine moiety with the membrane-interacting capacity characteristic of bile acids. Currently, this compound demonstrates significant research potential in hepatic disorders including non-alcoholic fatty liver disease and cholestasis, as well as in gut microbiota-host metabolic interactions. The CAS registry number 516-35-8 provides unique identification for quality control and research traceability.