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M3148

Sigma-Aldrich

2-Mercaptoethanol

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

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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 %

reaction suitability

reagent type: reductant

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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1 of 4

This Item
M62506368997622
2-Mercaptoethanol for molecular biology, suitable for electrophoresis, suitable for cell culture, BioReagent, 99% (GC/titration)

Sigma-Aldrich

M3148

2-Mercaptoethanol

Essential+ Grade
2-Mercaptoethanol ≥99.0%

Sigma-Aldrich

M6250

2-Mercaptoethanol

-
2-Mercaptoethanol BioUltra, for molecular biology, ≥99.0% (GC)

Sigma-Aldrich

63689

2-Mercaptoethanol

Premium Grade
2-Mercaptoethanol for HPLC derivatization, LiChropur™, ≥99.0% (GC)

Supelco

97622

2-Mercaptoethanol

-
product line

BioReagent

product line

-

product line

BioUltra

product line

-

assay

99% (GC/titration)

assay

≥99.0%

assay

≥99.0% (GC)

assay

≥99.0% (GC)

form

liquid

form

liquid

form

liquid

form

liquid

technique(s)

cell culture | mammalian: suitable, electrophoresis: suitable

technique(s)

-

technique(s)

RNA extraction: suitable, protein extraction: suitable

technique(s)

HPLC: suitable

pH

4.5-6 (20 °C, 500 g/L)

pH

4.5-6 (20 °C, 500 g/L)

pH

4.5-6 (20 °C, 500 g/L)

pH

-

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)
  • to lyse NuLi-1 (Normal Lung, University of Iowa-1) cells
  • to trypsinize mouse embryonic stem cells
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.

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

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