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D9163

DL-Dithiothreitol

suitable for electrophoresis, ≥99%

Synonym(s):

threo-1,4-Dimercapto-2,3-butanediol, Cleland’s reagent, DTT

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About This Item

Linear Formula:
HSCH2CH(OH)CH(OH)CH2SH
CAS Number:
3483-12-3
Molecular Weight:
154.25
UNSPSC Code:
12161504
NACRES:
NB.22
PubChem Substance ID:
24894266
EC Number:
222-468-7
Beilstein/REAXYS Number:
1719757
MDL number:
MFCD00004877
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Quality Segment

200

assay

≥99%

form

powder

reaction suitability

reagent type: reductant

technique(s)

electrophoresis: suitable

mp

40-44 °C, 41-44 °C (lit.)

solubility

H2O: 50 mg/mL, clear, colorless to very faintly yellow

cation traces

heavy metals (as Pb): ≤10 ppm

absorption

≤0.04 at 280 at 0.02 M

storage temp.

2-8°C

SMILES string

O[C@H](CS)[C@H](O)CS

InChI

1S/C4H10O2S2/c5-3(1-7)4(6)2-8/h3-8H,1-2H2/t3-,4-/m1/s1

InChI key

VHJLVAABSRFDPM-QWWZWVQMSA-N

Application

An excellent reagent for maintaining SH groups in reduced state; quantitatively reduces disulfides. DTT is effective in sample buffers for reducing protein disulfide bonds prior to SDS-PAGE. DTT can also be used for reducing the disulfide bridge of the cross-linker N,N′-bis(acryloyl)cystamine to break apart the matrix of a polyacrylamide gel. DTT is less pungent and is less toxic than 2-mercaptoethanol. Typically, a seven fold lower concentration of DTT (100 mM) is needed than is used for 2-mercaptoethanol (5% v/v, 700 mM).

Analysis Note

Tested for use in reduced SDS-PAGE

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pictograms

CorrosionExclamation mark
GHS05,GHS07

signalword

Danger

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Faceshields, Gloves

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 3 - Eye Dam. 1 - Skin Corr. 1B

Storage Class

8A - Combustible corrosive hazardous materials

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