Tags: Chemical Compound, Chemical Substance.
Sudan IV (C24H20N4O) is a lysochrome (fat-soluble dye) diazo dye used for the staining of lipids triglycerides and lipoproteins on frozen paraffin sections. It has the appearance of reddish brown crystals with melting point 199 °C and maximum absorption at 520(357) nm.Sudan IV is one of the dyes used for Sudan staining. Similar dyes include Oil Red O Sudan III and Sudan Black B.
