Skip to Content
Merck
CN
All Photos(4)

Key Documents

View All Documentation

N3013

Sigma-Aldrich

Nile Red

Powder

Synonym(s):

9-(diethylamino)-5H-benzo[a]phenoxazin-5-one, 9-(diethylamino)benzo[a]phenoxazin-5-one, Nile Blue A Oxazone

Sign Into View Organizational & Contract Pricing
All Photos(4)

About This Item

Empirical Formula (Hill Notation):
C20H18N2O2
CAS Number:
7385-67-3
Molecular Weight:
318.37
Beilstein:
279110
EC Number:
230-966-0
MDL number:
MFCD00011639
UNSPSC Code:
12171500
PubChem Substance ID:
24897612
NACRES:
NA.47

Product Name

Nile Red, Technical grade

grade

technical grade

Quality Level

200

form

powder

composition

Carbon: 70.0-77.3%

Nitrogen: 7.5-8.8%

technique(s)

titration: suitable

mp

203-205 °C (lit.)

solubility

methanol: 1 mg/mL

λmax

553 nm

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

CCN(CC)c1ccc2N=C3C(Oc2c1)=CC(=O)c4ccccc34

InChI

1S/C20H18N2O2/c1-3-22(4-2)13-9-10-16-18(11-13)24-19-12-17(23)14-7-5-6-8-15(14)20(19)21-16/h5-12H,3-4H2,1-2H3

InChI key

VOFUROIFQGPCGE-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

General description

Nile Red is a lipophilic fluorescent benzophenoxazone dye that is metachromatic and solvatochromic. It is an uncharged hydrophobic molecule with the ability to stain and visualize lipid droplets in cells and tissues. It functions as a fluorescent probe for intracellular lipids and hydrophobic domains of proteins. This dye is fluorescent in all organic solvents. Its fluorescence colors range from golden yellow to deep red.

Application

Nile red is widely employed in studies related to lipid metabolism, lipid droplet dynamics, lipid accumulation in cells or tissues, and lipid-based drug delivery systems. Its other applications include:
  • identification of microplastics in routine analysis of biological samples.
  • detection of lysosomes and lysosome-related organelles, like gut granules in C. elegans intestinal cells.
  • it exhibits strong fluorescence enhancement and is used for staining SDS (sodium dodecyl sulphate) gels.

Principle

Nile Red is lipophilic in nature and exploits the hydrophobic properties of molecules such as lipids and plastics that fluoresce when excited with certain wavelengths, facilitating quantification and identification.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
SHBS6175
SLBP9326V
070K3462
063K3730
063K3691

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

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