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.
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Pigment Violet 3
Pigment for paints, plastics, inks, and rubber
Pigment blue 1
pigment for printing inks and paints
Pigment Violet 1
purple pigment for coloring
Vat Black 16
Vat dye for textiles
Sudan III
Biological stain and histological dye
Acid Red 73, disodium salt
Acid dye for textiles and histology
Acid Red 151
synthetic acid dye
1-[[4-[(2,5-dimethylphenyl)diazenyl]-2,5-dimethylphenyl]diazenyl]naphthalen-2-ol
NPGIHFRTRXVWOY-UHFFFAOYSA-N
CC1=CC(=C(C=C1)C)N=NC2=C(C=C(C(=C2)C)N=NC3=C(C=CC4=CC=CC=C43)O)C
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