Sudan II (Sudan Red II, Solvent Orange 7, Color Index No: 12140, C.I. 12140) is a lysochrome (fat-soluble dye) azo dye used for staining of triglycerides in frozen sections, and some protein bound lipids and lipoproteins on paraffin sections.
[1] Carolina V Di Anibal, et al. Talanta. 2009 Aug 15;79(3):887-92.
















