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N3013

Sigma-Aldrich

Nile Red

Powder

Synonym(s):

Nile Blue A Oxazone

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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
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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

color

faint green to brown

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

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General description

Nile Red is a lipophilic fluorescent dye that is commonly used in various scientific applications, particularly in lipid research. It has the ability to stain and visualize lipid droplets in cells and tissues.

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.

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

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Certificates of Analysis (COA)

Lot/Batch Number
SLBP9326V
070K3462
063K3730
063K3691
061K3444

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D L Sackett et al.
Analytical biochemistry, 167(2), 228-234 (1987-12-01)
Nile red is an uncharged hydrophobic molecule whose fluorescence is strongly influenced by the polarity of its environment. It interacts with many, but not all, native proteins, including beta-lactoglobulin, kappa-casein, and albumin, with a wide range of spectral changes for
Autophagy gene disruption reveals a non-vacuolar cell death pathway in Dictyostelium.
Kosta A
The Journal of Biological Chemistry, 279, 48404-48404 (2004)
Zebrafish obesogenic test: a tool for screening molecules that target adiposity.
Tingaud-Sequeira A
Journal of Lipid Research, 52, 1765-1765 (2011)
Glycine N-methyltransferase deficiency affects Niemann-Pick type C2 protein stability and regulates hepatic cholesterol homeostasis.
Liao YJ
Molecular Medicine, 18, 412-412 (2012)
Jiyoon Kim et al.
Nature communications, 11(1), 1418-1418 (2020-03-19)
The Golgi apparatus plays a central role in the intracellular transport of macromolecules. However, molecular mechanisms of Golgi-mediated lipid transport remain poorly understood. Here, we show that genetic inactivation of the Golgi-resident protein GRASP55 in mice reduces whole-body fat mass
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Questions

  1. How should n3013 be dissolved and diluted for lipid staining?

    1 answer

    1. There has not been any conduct suitability testing for Nile Red. Please see the following for an article that may offer information; J. Histochem. Cytochem. 35:619-621 reference.
      To perform the staining, a stock solution of Nile red was prepared by dissolving 10 mg of Nile red in 10 ml of acetone, which was then stored in the refrigerator protected from light. The sections were fixed in 1% glutaraldehyde in PBS for 5 minutes and washed in PBS three times for 2 minutes each. The staining solution was then prepared by diluting 100 ul of the stock solution in 1 ml of PBS. The sections were covered with this solution for 20 minutes at room temperature, then briefly washed in PBS and mounted in 75% glycerol in PBS. Other sections were incubated with solutions containing 50, 10, and 1 ug and 100 ng of Nile red per ml. The sections were examined with a filter set for fluorescein fluorescence (450-500 nm band pass excitation filter, a 510 nm center wavelength chromatic beam splitter, and a 528 nm long-pass barrier filter) and were photographed.

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