title: Formation of a TBA reaction product from crown ether in the presence of KO2.
abstract: Potassium superoxide (KO2), which can be dissolved in dimethyl sulfoxide containing crown ether, has been used as a source of O2-. for superoxide reaction systems. We have found that crown ether reacts with thiobarbituric acid (TBA) in the presence of KO2 to form a red pigment, which is a well-known reaction product of lipoperoxide.
mesh_terms: D004121:Dimethyl Sulfoxide; D004988:Ethers, Cyclic; D007202:Indicators and Reagents; D010100:Oxygen; D013053:Spectrophotometry; D013481:Superoxides; D013858:Thiobarbiturates
chemical_list: D004988:Ethers, Cyclic; D007202:Indicators and Reagents; D013858:Thiobarbiturates; D013481:Superoxides; D010100:Oxygen; D004121:Dimethyl Sulfoxide