Thiobarbituric acid (TBA) reaction has been used to detect lipid oxidation. When lipids are oxidized, malonaldehyde is formed. TBA reacts with malonaldehyde in hot acid to form a red complex of malonaldehyde:TBA (1:2). Used to quantitate lipopolysaccharides, carrageenan, and sialic acids; used…

≥98% Synonym(s): 4,6-Dihydroxy-2-mercaptopyrimidine; 4,6-Dihydroxypyrimidine-2-thiol; TBA Amino Acid Sequence: Empirical Formula: C₄H₄N₂O₂S Formula Weight: 144.15 Linear Formula: …