The chemical Ebselen has a designated molecular formula of C13H9NOSe and a molecular weight of 274.192 g/mol. Synonyms may include: CCRIS 3714, Ebselene [French], Ebseleno [Spanish], Ebselenum [Latin], 2-Phenyl-1,2-benzisoselenazol-3(2H)-one, PZ 51, NSC 639762, Ebselene, Ebseleno, Ebselenum, UNII-40X2P7DPGH, SPI-1005 (ChemID). Ebselen has been assigned a MeSH pharmacological action of: Cyclooxygenase Inhibitor.