Merck
All Photos(3)

O0625

Sigma-Aldrich

Oil Red O

certified by the Biological Stain Commission

Synonym(s):
1-([4-(Xylylazo)xylyl]azo)-2-naphthol, 1-[2,5-Dimethyl-4-(2,5-dimethylphenylazo)phenylazo]-2-naphthol, Solvent Red 27
Empirical Formula (Hill Notation):
C26H24N4O
CAS Number:
Molecular Weight:
408.49
Colour Index Number:
26125
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.47

grade

certified by the Biological Stain Commission

Quality Level

form

powder

composition

Dye content, ≥75%

mp

120 °C (dec.) (lit.)

solubility

chloroform/ethanol (1:1): 1 mg/mL

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

Cc1ccc(C)c(c1)\N=N\c2cc(C)c(cc2C)\N=N/c3c(O)ccc4ccccc34

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

InChI key

NPGIHFRTRXVWOY-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

General description

Oil Red O is a lysochrome. It is used to stain and visualise general localization of fats.
Oil Red O stains lipid materials and the lipids take red-orange color. It also marks vacuoles, particularly observed in ALL-L3 (acute lymphoblastic leukemia) or Burkitt′s lymphoma/leukemia. Oil Red O staining is done on fresh samples, since alcohol fixation removes lipid.

Application

Oil Red O has been used for the staining of lipid droplets and lipid-containing vacuoles in cells.
Oil Red O has been used:
  • for staining liver sections in histological analysis
  • for the quantification of lipids in cells
  • to stain aorta to examine atherosclerotic lesions

Packaging

25, 100 g in glass bottle

Suitability

Certified for use as a fat stain in Churukian′s modification of the method of Lillie and Asburn.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service