The molecule is a sulfoxide that is the S-oxide of biotin. It has a role as a metabolite. It is a member of biotins and a sulfoxide. It is a conjugate acid of a biotinate sulfoxide(1-).
5-[(3aS,4S,6aR)-2,5-dioxo-1,3,3a,4,6,6a-hexahydrothieno[3,4-d]imidazol-4-yl]pentanoic acid