Taurochenodeoxycholic acid-d5 (sodium) is the deuterium labeled Taurochenodeoxycholic acid sodium. Taurochenodeoxycholic acid sodium salt (12-Deoxycholyltaurine sodium salt) is one of the main bioactive substances of animals bile acid. Taurochenodeoxycholic acid induces apoptosis and shows obvious anti-inflammatory and immune regulation properties[1][2].