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Merck

63689

Sigma-Aldrich

2- Mercaptoetanol

BioUltra, for molecular biology, ≥99.0% (GC)

Sinónimos:

β-Mercaptoetanol, 2- Hidroxietilmercaptano, BME, Tioetilenglicol

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25 ML
MXP 1,270.00
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MXP 3,484.00

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25 ML
MXP 1,270.00
100 ML
MXP 3,484.00

About This Item

Fórmula lineal:
HSCH2CH2OH
Número de CAS:
Peso molecular:
78.13
Beilstein/REAXYS Number:
773648
EC Number:
MDL number:
UNSPSC Code:
12161504
PubChem Substance ID:
NACRES:
NA.25

MXP 1,270.00


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grade

for molecular biology

Quality Level

vapor density

2.69 (vs air)

vapor pressure

1 mmHg ( 20 °C)

product line

BioUltra

assay

≥99.0% (GC)

form

liquid

expl. lim.

18 %

reaction suitability

reagent type: reductant

concentration

14.3 M (pure liquid)

technique(s)

RNA extraction: suitable
protein extraction: suitable

impurities

DNases, none detected
RNases, none detected
insoluble matter, passes filter test
phosphatases, none detected
proteases, none detected

refractive index

n20/D 1.500 (lit.)
n20/D 1.501

pH

4.5-6 (20 °C, 500 g/L)

bp

157 °C (lit.)

solubility

H2O: 0.5 M at 20 °C, clear, colorless

density

1.114 g/mL at 25 °C (lit.)

cation traces

Al: ≤0.5 mg/kg
Ba: ≤0.1 mg/kg
Bi: ≤0.1 mg/kg
Ca: ≤0.5 mg/kg
Cd: ≤0.05 mg/kg
Co: ≤0.02 mg/kg
Cr: ≤0.02 mg/kg
Cu: ≤0.02 mg/kg
Fe: ≤0.1 mg/kg
K: ≤0.5 mg/kg
Li: ≤0.1 mg/kg
Mg: ≤0.1 mg/kg
Mn: ≤0.02 mg/kg
Mo: ≤0.1 mg/kg
Na: ≤1 mg/kg
Ni: ≤0.05 mg/kg
Pb: ≤0.1 mg/kg
Sr: ≤0.1 mg/kg
Zn: ≤0.1 mg/kg

SMILES string

OCCS

λ

0.5 M in H2O

UV absorption

λ: 260 nm Amax: 1.5
λ: 280 nm Amax: 0.3

storage temp.

2-8°C

InChI

1S/C2H6OS/c3-1-2-4/h3-4H,1-2H2

InChI key

DGVVWUTYPXICAM-UHFFFAOYSA-N

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Application

BME es idóneo para reducir los puentes disulfuro de las proteínas antes de la electroforesis en gel de poliacrilamida y suele incluirse en un tampón de muestra para SDS-PAGE a una concentración de un 5 %. La escisión de los puentes disulfuro intermoleculares (entre subunidades) permite que las subunidades de una proteína se separen de forma independiente en la SDS-PAGE. La escisión de los puentes disulfuro intramoleculares (dentro de la subunidad) permite la desnaturalización completa de las subunidades para que cada péptido migre en función de la longitud de su cadena sin influencia de la estructura secundaria.
2-Mercaptoethanol has been used
  • in the protein extraction buffer prepared for leaf samples.[1]
  • as a supplement in cell culture media.[2]
  • in the procedure of RNA extraction.[3]

Other Notes

Isolation of RNA using guanidinium salts. Inclusion of a reductant enhances denaturation by breaking intramolecular protein disulfide bonds[4]

signalword

Danger

Hazard Classifications

Acute Tox. 2 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 2 - Eye Dam. 1 - Repr. 2 - Skin Irrit. 2 - Skin Sens. 1A - STOT RE 2 Oral

target_organs

Liver,Heart

Storage Class

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

wgk_germany

WGK 3

flash_point_f

165.2 °F - closed cup

flash_point_c

74 °C - closed cup

ppe

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter


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Microfluidic extraction, stretching and analysis of human chromosomal DNA from single cells.
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The interplay between protein L-isoaspartyl methyltransferase activity and insulin-like signaling to extend lifespan in Caenorhabditis elegans.
Khare S et al.
PLoS ONE, 6, e20850-e20850 (2011)
Adam Healey et al.
Plant methods, 10, 21-21 (2014-07-24)
Next-generation sequencing technologies rely on high quality DNA that is suitable for library preparation followed by sequencing. Some plant species store large amounts of phenolics and polysaccharides within their leaf tissue making genomic DNA extraction difficult. While many DNA extraction
Isolation of RNA using guanidinium salts.
R J MacDonald et al.
Methods in enzymology, 152, 219-227 (1987-01-01)
Katharina Rothe et al.
Blood, 123(23), 3622-3634 (2014-04-24)
Previous studies demonstrated that imatinib mesylate (IM) induces autophagy in chronic myeloid leukemia (CML) and that this process is critical to cell survival upon therapy. However, it is not known if the autophagic process differs at basal levels between CML

Artículos

Bis-Tris SDS-PAGE gel casting kits with mPAGE® TurboMix technology for rapid, reliable gel casting and protein separation.

Protocolos

Resumen de la química del gel de poliacrilamida e instrucciones detalladas para preparar a mano geles de poliacrilamida con los kits de moldeo del gel bis-Tris TurboMix mPAGE®

Simplify your SDS-PAGE gel preparation with our pre-mixed solutions and protocols to achieve precise protein separation.

Questions

1–3 of 3 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

      Helpful?

  3. How do I know when 2-Mercaptoethanol expires

    1 answer
    1. This material is quite stable when stored and handled properly. One visual indication of degradation would be a color change to a darker yellow to brown. This product is not assigned an expiration date or recommended retest date. Products with no expiration date or recommended retest date should be routinely inspected by customers to ensure they perform as expected. These products are also subject to a one year warranty from the date of shipment. For more information you may access the "Product Dating Information" document under "ADDITIONAL USEFUL DOCUMENTS ABOUT OUR PRODUCTS" at the bottom of the Quality Services page with this link: https://www.sigmaaldrich.com/life-science/quality-and-regulatory-management/quality-services

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