oxygen(-2) anion is a chemical compound registered under CAS number 12534-35-9, with the molecular formula O4Tc3 and a molecular weight of about 357.71 g/mol. It is also known as technetium(+7) cation. TwoChem supplies oxygen(-2) anion for laboratory research and bulk production; product code 495123. Send an inquiry for purity, packaging, price and lead time.