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M3148

Sigma-Aldrich

2-Mercaptoethanol

for molecular biology, suitable for electrophoresis, suitable for cell culture, BioReagent, 99% (GC/titration)

Synonym(s):
β-Mercaptoethanol, 2-Hydroxyethylmercaptan, BME, Thioethylene glycol
Linear Formula:
HSCH2CH2OH
CAS Number:
Molecular Weight:
78.13
Beilstein:
773648
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.31

grade

for molecular biology

Quality Level

vapor density

2.69 (vs air)

vapor pressure

1 mmHg ( 20 °C)

product line

BioReagent

assay

99% (GC/titration)

form

liquid

expl. lim.

18 %

concentration

14.3 M (pure liquid)

technique(s)

cell culture | mammalian: suitable
electrophoresis: suitable

refractive index

n20/D 1.500 (lit.)

pH

4.5-6 (20 °C, 500 g/L)

bp

157 °C (lit.)

solubility

H2O: soluble 1 mL/mL

density

1.114 g/mL at 25 °C (lit.)

foreign activity

DNase, RNase, protease, none detected

storage temp.

room temp

SMILES string

OCCS

InChI

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

InChI key

DGVVWUTYPXICAM-UHFFFAOYSA-N

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Related Categories

Application

Reducing agent
β-mercaptoethanol or 2-mercaptoethanol has been used:
  • as a supplement in Roswell Park Memorial Institute (RPMI)-1640 medium to culture DT40 cells (chicken B cell line)
[65]
  • to lyse NuLi-1 (Normal Lung, University of Iowa-1) cells
  • [67]
  • to trypsinize mouse embryonic stem cells
  • [43]
    BME is suitable for reducing protein disulfide bonds prior to polyacrylamide gel electrophoresis and is usually included in a sample buffer for SDS-PAGE at a concentration of 5%. Cleaving intermolecular (between subunits) disulfide bonds allows the subunits of a protein to separate independently on SDS-PAGE. Cleaving intramolecular (within subunit) disulfide bonds allows the subunits to become completely denatured so that each peptide migrates according to its chain length with no influence due to secondary structure.

    Packaging

    25, 100, 250, 500 mL in glass bottle

    Signal Word

    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

    Storage Class Code

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

    WGK

    WGK 3

    Flash Point(F)

    154.4 °F - closed cup

    Flash Point(C)

    68 °C - closed cup

    Personal Protective Equipment

    dust mask type N95 (US), Eyeshields, Gloves

    Certificate of Analysis

    Enter Lot Number to search for Certificate of Analysis (COA).

    Certificate of Origin

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