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E3876

Sigma-Aldrich

N-Ethylmaleimide

crystalline, ≥98% (HPLC)

Sinónimos:

NEM

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About This Item

Fórmula empírica (notación de Hill):
C6H7NO2
Número de CAS:
128-53-0
Peso molecular:
125.13
Beilstein/REAXYS Number:
112448
EC Number:
204-892-4
MDL number:
MFCD00005509
UNSPSC Code:
12352106
PubChem Substance ID:
24278420
NACRES:
NA.21
En este momento no podemos mostrarle ni los precios ni la disponibilidad

biological source

synthetic (organic)

Quality Level

200

assay

≥98% (HPLC)

form

crystalline

storage condition

(Tightly closed. Dry. Keep in a well-ventilated place. )

technique(s)

activity assay: suitable
co-immunoprecipitation (co-IP): suitable
immunoblotting: suitable

color

white to faint yellow

bp

210 °C (lit.)

mp

43-46 °C (lit.)

solubility

ethanol: 50 mg/mL, clear to slightly hazy, colorless to faint yellow or tan

suitability

suitable for Western blot

application(s)

life science and biopharma

storage temp.

2-8°C

SMILES string

CCN1C(=O)C=CC1=O

InChI

1S/C6H7NO2/c1-2-7-5(8)3-4-6(7)9/h3-4H,2H2,1H3

InChI key

HDFGOPSGAURCEO-UHFFFAOYSA-N

Gene Information

human ... KCNQ2(3785) , KCNQ4(9132) , KCNQ5(56479) , SLC6A3(6531) , SLC6A4(6532)

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Application

Reagent for the covalent modification of cysteine residues in proteins.

Biochem/physiol Actions

Augments currents from native M-channels in sympathetic neurons and acts as an opener for KCNQ2, KCNQ4 and KCNQ5 channels.
Sulfhydryl alkylating agent that inactivates NADP-dependent isocitrate dehydrogenase and many endonucleases.

Preparation Note

NEM gives a clear solution in ethanol at 50 mg/ml. NEM dissolves in water (>50 mg in 4 ml); however, aqueous solutions are unstable. The rate of hydrolysis is pseudo-first order and significantly dependent on pH.

Other Notes

For additional information on our range of Biochemicals, please complete this form.

comparable product

Referencia del producto
Descripción
Precios

E1271

N-Ethylmaleimide, BioXtra, ≥98% (HPLC)

04259

N-Ethylmaleimide, BioUltra, ≥99.0% (HPLC)

04260

N-Ethylmaleimide, purum p.a., ≥99.0% (HPLC)

pictograms

Skull and crossbonesCorrosion
GHS06,GHS05

signalword

Danger

Hazard Classifications

Acute Tox. 2 Oral - Acute Tox. 3 Dermal - Eye Dam. 1 - Skin Corr. 1B - Skin Sens. 1

Storage Class

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

wgk_germany

WGK 3

flash_point_f

163.2 °F - closed cup

flash_point_c

72.9 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

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Certificados de análisis (COA)

Lot/Batch Number
0000412971
0000412969
0000412971
0000412972
0000412972

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Biochimica et biophysica acta, 1838(1 Pt B), 382-387 (2013-10-22)
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Journal of medicinal chemistry, 52(23), 7410-7420 (2009-07-09)
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Hannah E Boycott et al.
Proceedings of the National Academy of Sciences of the United States of America, 110(41), E3955-E3964 (2013-09-26)
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Florian A Salomons et al.
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Conditions causing an increase in misfolded or aberrant proteins can impair the activity of the ubiquitin/proteasome system (UPS). This observation is of particular interest, given the fact that proteotoxic stress is closely associated with a large variety of disorders. Although
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Questions

1–2 of 2 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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