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Merck

O0625

Oil Red O

Dye content, ≥75%, certified by the Biological Stain Commission, powder

Sinónimos:

1-([4-(Xylylazo)xylyl]azo)-2-naphthol, 1-[2,5-Dimethyl-4-(2,5-dimethylphenylazo)phenylazo]-2-naphthol, Solvent Red 27

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About This Item

Fórmula empírica (notación de Hill):
C26H24N4O
Número CAS:
Peso molecular:
408.49
NACRES:
NA.47
PubChem Substance ID:
UNSPSC Code:
12171500
EC Number:
215-295-3
MDL number:
Colour Index Number:
26125

Nombre del producto

Oil Red O, certified by the BSC

Quality Level

InChI key

NPGIHFRTRXVWOY-UHFFFAOYSA-N

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

SMILES string

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

agency

certified by the BSC

form

powder

composition

Dye content, ≥75%

technique(s)

microbe id | staining: suitable

mp

120 °C (dec.) (lit.)

solubility

chloroform/ethanol (1:1): 1 mg/mL

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

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Application

Oil Red O has been used for the staining of lipid droplets and lipid-containing vacuoles in cells.
Certified for use as a fat stain in Churukian′s modification of the method of Lillie and Asburn.
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

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.

Clase de almacenamiento

11 - Combustible Solids

wgk

WGK 3

ppe

Eyeshields, Gloves, type N95 (US)


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Certificados de análisis (COA)

Lot/Batch Number

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  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. What is the basic principle involved in the staining of fats and lipids with Oil Red O, Product O0625?

    The Oil Red O is only minimally soluble in the solvent.  Solubility is typically decreased by diluting the stock Oil Red O solutions in water before use.  The Oil Red O then moves from the solution to the lipid - where there is greater solubility.

  4. Is there a recommended staining procedure for Product O0625, Oil Red O, for staining fats or lipids in tissue sections.

    Yes, there are several.  Working solutions prepared without dextrin typically have shorter stability dating.  The method of the Biological Stain Commission is listed in: Penny, DP et al, Analysis and testing of biological stains - The Biological Stain Commission Procedures. Biotech. Histochem. 77(5&6), 237-275, (2002).  The Churukian method is also listed in Bancroft, J and Gamble, M; Theory and Practice of Histological Techniques, Churchill Livingstone, New York 2002 pages 207-208.

  5. Can the Oil Red O, Product O0625, staining procedure be used with paraffin sections of tissue?

    No.  The solvents typically used in paraffin processing will dissolve away most of the fats and lipids.  Frozen sections are the preferred tissue specimen.

  6. Can Oil Red O, Product O0625, be utilized for staining adipocytes in cell culture?  

    Yes, although the cultured cells must first be fixed before staining.  Preferred fixatives would include aqueous fixatives such as 10% neutral buffered formalin.  Avoid fixatives such as ethanol or acetone. After fixation and rinsing, the cells may be stained with the basic procedures used for staining tissues attached to glass slides

  7. Has product O0625, Oil Red O, been use-tested for staining lipoproteins in agarose gels?

    Each lot of Product O0625 has been certified for use in histological applications by the Biological Stain Commission. It is not specifically use-tested for any electrophoresis application. We offer a different grade of Oil Red O (Product No. O9755) which has been tested for suitability in electrophoresis; each lot of O9755 has been tested and found suitable for staining lipoproteins that have been separated by cellulose acetate electrophoresis.

  8. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  9. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  10. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

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Huang K, et al.
Journal of Hepatology, 66(5), 962-977 (2017)
Natural dyes versus lysochrome dyes in cheiloscopy: A comparative evaluation
Singh NN, et al.
Journal of forensic dental sciences, 2(1), 11-11 (2010)
Adult bone marrow is a rich source of human mesenchymal 'stem' cells but umbilical cord and mobilized adult blood are not.
Wexler SA, et. al.
British Journal of Haematology, 121, 368-368 (2003)
Clinical Laboratory Medicine (2002)

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