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Pigment blue 1
pigment for printing inks and paints
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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.
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