Sulphur and selenium compounds play vital roles in biological systems, serving as components of amino acids, enzymes, and antioxidants.

CAS Number
57808-65-8
Alternate CAS Number
61438-64-0(Na Dihydrate Salt)
CAS Number
60-23-1
Alternate CAS Number
156-57-0(HCl Salt);27761-19-9(Bitartrate Salt)