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Merck
CN

46290

Sudan Red 7B

suitable for microscopy

Synonym(s):

Fat Red 7B, Fat red bluish, Solvent Red 19

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About This Item

Empirical Formula (Hill Notation):
C24H21N5
CAS Number:
6368-72-5
Molecular Weight:
379.46
EC Number:
228-862-5
UNSPSC Code:
12171500
NACRES:
NA.47
PubChem Substance ID:
57650757
MDL number:
MFCD00003904
Colour Index Number:
26050
Beilstein/REAXYS Number:
3534323

Key Documents

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Product Name

Sudan Red 7B, suitable for microscopy

InChI key

VKWNTWQXVLKCSG-ZDXBJJIESA-N

InChI

1S/C24H21N5/c1-2-25-23-17-12-18-8-6-7-11-22(18)24(23)29-28-21-15-13-20(14-16-21)27-26-19-9-4-3-5-10-19/h3-17,25H,2H2,1H3/b27-26+,29-28+

SMILES string

CCNc1ccc2ccccc2c1\N=N\c3ccc(cc3)\N=N\c4ccccc4

form

powder

mp

130 °C (dec.) (lit.)

solubility

acetone: 0.1 g/10 mL, clear to turbid, red

λmax

367-377 nm in toluene (2nd)
528-538 nm in toluene (1st)

suitability

suitable for microscopy

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

Quality Level

100

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Biochem/physiol Actions

Sudan red 7B, also known as fat red, is a non-fluorescent stain. It is effectively used to stain lipids and is used to indicate the presence of suberin in cell walls. Sudan red 7B acts as a marker for formosan subterranean termite, Coptotermes fornosanus Shiraki.
Appl- Sudan Red 7B has been used to stain root sections of pearl millet.

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
BCCN0452
BCCL8558
BCCK9729
BCCH9860
BCCJ7137

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Onions and Other Vegetable Alliums, 454-454 (2008)
Root Methods: A Handbook, 594-594 (2013)
Component traits of plant water use are modulated by vapour pressure deficit in pearl millet (Pennisetum glaucum (L.) R. Br.).
Kholova J, et al.
Functional plant biology, 43(5), 423-437 (2016)
Sudan Red 7B, a Dye Marker for Coptotermes formosanus
Lai P Y, et al.
Hawaiian Entomological Society. (1983)
Effects of a dye, Sudan Red 7B, on the Formosan subterranean termite, Coptotermes formosanus Shiraki (Isoptera: Rhinotermitidae).
Su N Y, et al.
Material and Organismen, 18, 127-133 (1983)
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