3-Epideoxycholic acid-d5 is the deuterium labeled 3-Epideoxycholic acid (HY-48814). 3-Epideoxycholic acid is the microbial metabolite of Deoxycholic acid (HY-N0593). 3-Epideoxycholic acid targets FXR of dendritic cells, reduces their immunostimulatory properties, promotes the generation of Treg cells, and exhibits anti-inflammatory activity. 3-Epideoxycholic acid promotes the growth of bacteria Bacteroides[1][2].