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39255

4-Dimethylamino-4′-nitrostilbene

≥99.8% (T)

Synonym(s):

N,N-Dimethyl-4′-nitro-4-stilbenamine, DANS

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Size/SKUAvailabilityPrice
500 mg
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$151.00

About This Item

Linear Formula:
(CH3)2NC6H4CH=CHC6H4NO2
CAS Number:
2844-15-7
Molecular Weight:
268.31
UNSPSC Code:
12352108
NACRES:
NA.32
PubChem Substance ID:
57649889
MDL number:
MFCD00041877
Beilstein/REAXYS Number:
1379389

$151.00

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Quality Segment

200

assay

≥99.8% (T)

form

solid

mp

256-259 °C

fluorescence

λex 500 nm; λem ~700 nm in methylene chloride

SMILES string

CN(C)c1ccc(\C=C\c2ccc(cc2)[N+]([O-])=O)cc1

InChI

1S/C16H16N2O2/c1-17(2)15-9-5-13(6-10-15)3-4-14-7-11-16(12-8-14)18(19)20/h3-12H,1-2H3/b4-3+

InChI key

NVLSIZITFJRWPY-ONEGZZNKSA-N

Application

4-Dimethylamino-4′-nitrostilbene (DANS, DMANS) may be used as a proton/acid indicator and physical chemistry probe to study state energy and photoexcitation dynamics of molecules.

Other Notes

Standard for the correction of emission of fluorescence spectrometers

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This Item
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4-Dimethylamino-4′-nitrostilbene ≥99.8% (T)

Sigma-Aldrich

39255

4-Dimethylamino-4′-nitrostilbene

Ni(COD)(Cy-BQ) ≥95%

Sigma-Aldrich

927082

Ni(COD)(Cy-BQ)

(S)-(+)-Benzyl(3,5-dioxa-4-phospha-cyclohepta[2,1-a;3,4-a′]dinaphthalen-4-yl)methylamine 97%

Sigma-Aldrich

665355

(S)-(+)-Benzyl(3,5-dioxa-4-phospha-cyclohepta[2,1-a;3,4-a′]dinaphthalen-4-yl)methylamine

N4,N4,N4′,N4′-Tetra[(1,1′-biphenyl)-4-yl]-(1,1′-biphenyl)-4,4′-diamine ≥99% (HPLC)

Sigma-Aldrich

932698

N4,N4,N4′,N4′-Tetra[(1,1′-biphenyl)-4-yl]-(1,1′-biphenyl)-4,4′-diamine

fluorescence

λex 500 nm; λem ~700 nm in methylene chloride

fluorescence

-

fluorescence

-

fluorescence

-

Quality Level

200

Quality Level

100

Quality Level

100

Quality Level

100

assay

≥99.8% (T)

assay

≥95%

assay

97%

assay

≥99% (HPLC)

mp

256-259 °C

mp

-

mp

155-159 °C

mp

-

form

solid

form

powder

form

solid

form

-

pictograms

Exclamation mark
GHS07

signalword

Warning

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

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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Questions

  1. I am considering using this to detect microplastics on a nitrocellulose membrane. I have read a paper that used DANS. It caused plastics to fluoresce with UV excitation. I am not sure if DANS will also cause the membrane to fluoresce?

    1 answer

    1. This product is not performance tested for any specific application. The end user would have to determine suitability. The Peer Reviewed Papers available for the product do not appear to be specific for plastics. However, the link below is to a publication that may be helpful.

      Identification of microplastics using 4‐dimethylamino‐4′‐nitrostilbene solvatochromic fluorescence
      https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9291063/

      Helpful?

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