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Merck

D0632

Sigma-Aldrich

DL-Dithiothreitol

≥98% (HPLC), ≥99.0% (titration)

Synonim(y):

(±)-Dithiothreitol, rac-Dithiothreitol, Dithiothreitol, threo-1,4-Dimercapto-2,3-butanediol, Cleland’s reagent, DTT

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1 G
272,00 zł
5 G
812,00 zł
10 G
1540,00 zł
25 G
3790,00 zł
100 G
9240,00 zł
1 KG
Prześlij zapytanie

About This Item

Wzór liniowy:
HSCH2CH(OH)CH(OH)CH2SH
Numer CAS:
Masa cząsteczkowa:
154.25
Beilstein:
1719757
Numer WE:
Numer MDL:
Kod UNSPSC:
12352201
Identyfikator substancji w PubChem:
NACRES:
NA.21

272,00 zł


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Poziom jakości

Próba

≥98% (HPLC)
≥99.0% (titration)

Formularz

powder

przydatność reakcji

reagent type: reductant

kolor

white

mp

41-44 °C (lit.)

rozpuszczalność

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

Zastosowanie

general analytical

temp. przechowywania

2-8°C

ciąg SMILES

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

Klucz InChI

VHJLVAABSRFDPM-QWWZWVQMSA-N

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Opis ogólny

Dithiothreitol (DTT) is a disulfide (SH) reducing agent found in proteins and in the amino acid cysteine. It reduces a disulfide bond by forming a six-membrane ring and initiating a thiol-disulfide interchange. It is almost 7-fold stronger reducing agent than βME, hence efficient in lower concentrations.

Zastosowanie

Doskonały odczynnik do utrzymywania grup SH w stanie zredukowanym; ilościowo redukuje disulfidy. DTT jest skuteczny w buforach do próbek do redukcji wiązań dwusiarczkowych białek przed SDS-PAGE. DTT może być również stosowany do redukcji mostka dwusiarczkowego N,N′-bis(akryloilo)cystaminy w celu rozerwania matrycy żelu poliakrylamidowego. DTT jest mniej ostry i mniej toksyczny niż 2-merkaptoetanol. Zazwyczaj potrzebne jest siedmiokrotnie niższe stężenie DTT (100 mM) niż w przypadku 2-merkaptoetanolu (5% v/v, 700 mM).
DTT has been used:
  • as one of the reactants in the reduction and alkylation of αs1-Casein, the major allergen of cow′s milk.[1]
  • as a component of medium for the demembranation and reactivation of spermatozoa.[2]
  • to maintain stability of the enzyme as thiol effectively protects the active sites of the biocatalyst.[3]
  • as a reducing agent to test the specificity of the reaction of N-Ethylmaleimide with sulfhydryl groups.[4]
  • in proteomics analysis as in-solution protein digestion for mass spectrometry[5]
  • as a buffer component for protein quantification, to prepare wash buffer, lysis buffer, sample buffer, and protein elution buffer[6][4]

Działania biochem./fizjol.

Dithiothreitol (DTT) is extensively applied in chemical peptide synthesis and biochemical preparations of thiol proteins. It is also used in protein chemistry studies, such as protein folding and enzyme activity. It also acts as an enzyme stabilizer to stop DNA modification. DTT specifically mediates the thiol-disulfide interchange reaction to entirely reduce the intra- or inter-molecular disulfide bonds in biomolecules. This reaction results in the formation of thiols and the cyclic disulfide of DTT.[7]

Cechy i korzyści

  • High-quality DTT (HPLC≥98%), (titration≥99.0%)
  • Suitable for electrophoresis, proteomics analysis

Inne uwagi

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zalecane rękawice chroniące przed rozpryskami

Piktogramy

CorrosionExclamation mark

Hasło ostrzegawcze

Danger

Zwroty wskazujące rodzaj zagrożenia

Klasyfikacja zagrożeń

Acute Tox. 4 Oral - Eye Dam. 1 - Skin Irrit. 2

Kod klasy składowania

11 - Combustible Solids

Klasa zagrożenia wodnego (WGK)

WGK 3

Temperatura zapłonu (°F)

Not applicable

Temperatura zapłonu (°C)

Not applicable

Środki ochrony indywidualnej

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


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Produkty

Compare columns in resolving medium-sized antibody fragments after digestion with DTT or IdeS using Reversed-Phase Chromatography for analysis.

Questions

1–4 of 4 Questions  
  1. 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?

  2. 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

      Helpful?

  3. How long can the powder be left out a room temperature?

    1 answer
    1. The long term storage recommendation for this product is refrigerated at 2-8°C, but is shipped at ambient temperature. Refrigerated products that ship at ambient temperature are stable for up to 2 weeks to allow for transit time. Items left at room temperature for short periods will not be adversely effected.

      Helpful?

  4. What is the shelf life of this product once the stock solution is made up please? 

    1 answer
    1. A solution of DTT in Hepes buffer, pH 7.75 is stable for one week at 2 to 8 °C if the container is tightly sealed and the solution is protected from atmospheric oxygen by argon or nitrogen.

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