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

CAS Number
113-98-4
Alternate CAS Number
6011-39-8(Clemizol Salt);61-33-6(Freebase);69-57-8(Na Salt)
CAS Number
138890-62-7
Alternate CAS Number
150937-43-2(HCl Salt)
CAS Number
404034-55-5
Alternate CAS Number
2775292-24-3(oxalate salt)