can't read?
Thiobarbituric acid is an organic compound and a heterocycle. It is used as a reagent in assaying malondialdehyde (the TBARS assay of lipid peroxidation)
T 1607 (OTTO) Thiobarbituric acid, GR 99%+ Cas 504-17-6 - used to quantitate lipopolysaccharides, carrageenan, and sialic acids; used to detect lipid hydroperoxides and lipid oxidation