Oil red O (CHEBI:88213)

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ChEBI Name	Oil red O

ChEBI ID	CHEBI:88213

Definition	A bis(azo) compound that is 2-naphthol substituted at position 1 by a {4-[(2,5-dimethylphenyl)diazenyl]-2,5-dimethylphenyl}diazenyl group. A fat-soluble dye predominantly used for demonstrating triglycerides in frozen sections and for staining of protein bound lipids in paraffin sections.

Stars	This entity has been manually annotated by the ChEBI Team.

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Formula

C26H24N4O

Net Charge

Average Mass

408.496

Monoisotopic Mass

408.19501

InChI

InChI=1S/C26H24N4O/c1-16-9-10-17(2)22(13-16)27-28-23-14-19(4)24(15-18(23)3)29-30-26-21-8-6-5-7-20(21)11-12-25(26)31/h5-15,31H,1-4H3

InChIKey

NPGIHFRTRXVWOY-UHFFFAOYSA-N

SMILES

C1=C(C(=CC(=C1C)N=NC2=C3C(=CC=C2O)C=CC=C3)C)N=NC4=C(C=CC(=C4)C)C

Roles Classification
Application(s):	histological dye A dye used in microscopic or electron microscopic examination of cells and tissues to give contrast and to highlight particular features of interest, such as nuclei and cytoplasm.

ChEBI Ontology
Outgoing	Oil red O (CHEBI:88213) has functional parent 2-naphthol (CHEBI:10432) Oil red O (CHEBI:88213) has role histological dye (CHEBI:77178) Oil red O (CHEBI:88213) is a azobenzenes (CHEBI:22682) Oil red O (CHEBI:88213) is a bis(azo) compound (CHEBI:48960) Oil red O (CHEBI:88213) is a naphthols (CHEBI:25392)

IUPAC Name

1-({4-[(2,5-dimethylphenyl)diazenyl]-2,5-dimethylphenyl}diazenyl)naphthalen-2-ol

Synonyms	Sources
1-(2,5-Dimethyl-4-(2,5-dimethylphenylazo)phenylazo)-2-naphthol	ChemIDplus
C.I. 26125	ChEBI
Solvent red 27	ChEBI
Sudan Red 5B	ChEBI

Last Modified

14 October 2015