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234117

Sigma-Aldrich

Oil Red EGN

powder

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Synonym(s):
Solvent Red 26
Empirical Formula (Hill Notation):
C25H22N4O
CAS Number:
Molecular Weight:
394.47
Colour Index Number:
26120
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.47

form

powder

composition

Carbon > 64.7%, Nitrogen > 12.1%

mp

130 °C (dec.) (lit.)

λmax

521 nm

ε (extinction coefficient)

≥14000 at 352-360 nm in chloroform at 0.02 g/L
≥25000 at 517-525 nm in chloroform at 0.02 g/L

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

Cc1ccccc1\N=N\c2cc(C)c(cc2C)\N=N\c3c(O)ccc4ccccc34

InChI

1S/C25H22N4O/c1-16-8-4-7-11-21(16)26-27-22-14-18(3)23(15-17(22)2)28-29-25-20-10-6-5-9-19(20)12-13-24(25)30/h4-15,30H,1-3H3/b27-26+,29-28+

Inchi Key

NRBKWAQSLYBVSG-ZDXBJJIESA-N

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1 of 4

This Item
O0625201618S4261
vibrant-m

234117

Oil Red EGN

vibrant-m

O0625

Oil Red O

vibrant-m

201618

Sudan Red 7B

vibrant-m

S4261

Sudan IV

composition

Carbon > 64.7%, Nitrogen > 12.1%

composition

Dye content, ≥75%

composition

-

composition

Dye content, ≥80%

ε (extinction coefficient)

≥14000 at 352-360 nm in chloroform at 0.02 g/L, ≥25000 at 517-525 nm in chloroform at 0.02 g/L

ε (extinction coefficient)

-

ε (extinction coefficient)

≥14230 at 367-377 nm in toluene, ≥24660 at 528-538 nm in toluene

ε (extinction coefficient)

-

mp

130 °C (dec.) (lit.)

mp

120 °C (dec.) (lit.)

mp

130 °C (dec.) (lit.)

mp

199 °C (dec.) (lit.)

Quality Level

300

Quality Level

200

Quality Level

200

Quality Level

200

λmax

521 nm

λmax

-

λmax

364 nm (2nd), 533 nm

λmax

356-360 nm (2nd), 519-523 nm (1st)

application

Oil Red EGN has been used to stain lipid droplets accumulated in cell during adipogenesis.

Biochem/physiol Actions

Oil Red EGN is widely used to stain small triglyceride droplets. However, it is not advantageous for staining larger droplets.

pictograms

Health hazard

signalword

Warning

hcodes

Hazard Classifications

Carc. 2

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves


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