Oil red O is a fat-soluble bis(azo) dye, specifically a 2-naphthol derivative substituted with arylazo groups. It is predominantly used as a histological dye for demonstrating triglycerides in frozen tissue sections and for staining protein-bound lipids in paraffin sections.
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CAS 1320-06-5
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1-[[4-[(2,5-dimethylphenyl)diazenyl]-2,5-dimethylphenyl]diazenyl]naphthalen-2-ol
NPGIHFRTRXVWOY-UHFFFAOYSA-N
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