Thallous selenite. is a chemical compound registered under CAS number 15123-92-9, with the molecular formula O3SETL2 and a molecular weight of about 331.34 g/mol. It is also known as Thallous selenite. ChemRoots supplies Thallous selenite. for laboratory research and bulk production; product code 1002447. Send an inquiry for purity, packaging, price and lead time.