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D5545

Sigma-Aldrich

DL-Ditiotreitolo

BioXtra, ≥99.0% (titration)

Sinonimo/i:

treo-1,4-dimercapto-2,3-butandiolo, DTT, Reagente di Cleland

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About This Item

Formula condensata:
HSCH2CH(OH)CH(OH)CH2SH
Numero CAS:
Peso molecolare:
154.25
Beilstein:
1719757
Numero CE:
Numero MDL:
Codice UNSPSC:
12352201
ID PubChem:
NACRES:
NA.21

Nome Commerciale

BioXtra

Livello qualitativo

Saggio

≥99.0% (titration)

Forma fisica

powder

Impiego in reazioni chimiche

reagent type: reductant

Impurezze

Insoluble matter, passes filter test
≤0.3% 4,5-dihydroxy-1,2-dithiane

pH

4.0-6.0 (20-25 °C, 0.1 m in H2O)

Punto di fusione

41-44 °C (lit.)

Solubilità

H2O: 0.1 M, clear, colorless

Anioni in tracce

sulfate (SO42-): ≤0.005%

Cationi in tracce

Al: ≤0.0005%
As: ≤0.0001%
Ba: ≤0.0005%
Bi: ≤0.0005%
Ca: ≤0.001%
Cd: ≤0.0005%
Co: ≤0.0005%
Cr: ≤0.0005%
Cu: ≤0.0005%
Fe: ≤0.0005%
K: ≤0.005%
Li: ≤0.0005%
Mg: ≤0.0005%
Mn: ≤0.0005%
Mo: ≤0.0005%
Na: ≤0.1%
Ni: ≤0.0005%
Pb: ≤0.0005%
Sr: ≤0.0005%
Zn: ≤0.0005%

Assorbimento

≤0.100 at 280 in H2O at 0.1 M
≤0.400 at 260 in H2O at 0.1 M

Temperatura di conservazione

2-8°C

Stringa SMILE

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
VHJLVAABSRFDPM-QWWZWVQMSA-N

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Applicazioni

Un reagente eccellente per impedire l′ossidazione di gruppi SH ridotti; riduce i disolfuri quantitativamente. DTT è efficace in soluzioni tampone dei campioni per ridurre i legami proteina disolfuro prima dell′SDS-PAGE. DTT può anche essere usato per ridurre il ponte disolfuro del reticolante N,N′-bis(acriloil)cistammina per scindere la matrice del gel di poliacrilammide. DTT è meno aggressivo e tossico rispetto al 2-mercaptoetanolo. Tipicamente si ricorre a una concentrazione di DTT (100 mM) sette volte più bassa rispetto al 2-mercaptoetanolo (5% v/v, 700 mM).

Pittogrammi

CorrosionExclamation mark

Avvertenze

Danger

Indicazioni di pericolo

Classi di pericolo

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

Codice della classe di stoccaggio

11 - Combustible Solids

Classe di pericolosità dell'acqua (WGK)

WGK 2

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable

Dispositivi di protezione individuale

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


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