Tris(2-carboxyethyl)phosphine hydrochloride

Bezeichnung:Tris(2-carboxyethyl)phosphine hydrochloride

CAS-Nr51805-45-9

Englisch Name:Tris(2-carboxyethyl)phosphine hydrochloride

CBNumberCB8263816

SummenformelC9H15O6P.ClH

Molgewicht286.65

MOL-Datei51805-45-9.mol

Tris(2-carboxyethyl)phosphine hydrochloride physikalisch-chemischer Eigenschaften

Schmelzpunkt	177 °C
Dichte	1.041 g/mL at 25 °C
Brechungsindex	n20/D 1.367
storage temp.	2-8°C
Löslichkeit	H₂O: 50 mg/mL
Aggregatzustand	powder
pka	7.66(at 25℃)
Farbe	white
PH	7.0(aqueous solution; pH was adjusted with ammonium hydroxide)
Wasserlöslichkeit	Soluble in water and methanol.
Sensitive	Moisture Sensitive
maximale Wellenlänge (λmax)	λ: 260 nm Amax: 0.05 λ: 280 nm Amax: 0.03
Merck	14,9085
BRN	3724376
Stabilität	Stable for 1 year from date of purchase as supplied. Solutions in distilled water may be stored at -20°C for up to 1 month.
InChIKey	PBVAJRFEEOIAGW-UHFFFAOYSA-N
CAS Datenbank	51805-45-9(CAS DataBase Reference)

Sicherheit

Kennzeichnung gefährlicher	C,Xi
R-Sätze:	36/38-36/37/38-34
S-Sätze:	26-37/39-36/37/39-27-45
RIDADR	UN 3261 8/PG 2
WGK Germany	2
F	10
TSCA	No
HazardClass	8
PackingGroup	III
HS Code	29319090

Gefahreninformationscode (GHS)

Tris(2-carboxyethyl)phosphine hydrochloride Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R36/38:Reizt die Augen und die Haut.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
R34:Verursacht Verätzungen.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S37/39:Bei der Arbeit geeignete Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S27:Beschmutzte, getränkte Kleidung sofort ausziehen.
Beschreibung
TCEP HCl (51805-45-9) is a reagent for selective reduction of disulfides in aqueous solutions1-3?with distinct advantages over DTT which are application specific3. For example, spin labels are more stable with TCEP than DTT, Ni2+?(leached from affinity columns) causes rapid oxidation of DTT with no effect on TCEP and for long term storage of proteins TCEP is more stable than DTT with no metal chelator (EGTA) present but DTT is more stable in the presence of metal chelators.3
Chemische Eigenschaften
White Crystalline Solid
Verwenden
TCEP (Tris(2-carboxyethyl)phosphine hydrochloride) is an alternative which is not pungent, more stable and works even at low pH. It is more selective, i.e. do not reduce metals and buried disulfides.
Verwenden
Reducing agent, specific for disulfidesTris(2-carboxyethyl)phosphine hydrochloride is widely used as a reducing agent to reduce disulfide bonds in proteins and trans-4,5-dihydroxy-1,2-dithiane. It is involved in the reduction of sulfoxides, sulfonyl chlorides, N-oxides, and azides. It plays an important role in the tissue homogenization process for RNA isolation. It acts as a chelating agent and forms complexes with various heavy metal ions such as Zn(II), Cd(II), Pb(II), and Ni(II). Furthermore, it is useful in the labeling of cysteine residues with maleimides.
Verwenden
Biochemical tool for selective reduction of disulfide bridges at low pH; reductant for redox assays.
synthetische
The preparation of Tris(2-carboxyethyl)phosphine hydrochloride is as follows:Trimethyl 3,3 ', 3 "-phosphine triphenylpropionate (92.5g, 0.28mol) prepared as described above was added to a 250 ml reaction flask under mechanical stirring conditions and a molar ratio of 12mol/(120ml, 1.44mol), the mixture was heated to 90°C, the solid gradually dissolved, continue to heat the reaction 4h, stirring and cooling with ice water, precipitation of white solid, filter, filter cake with distilled water to get white (2-carboxyethyl) phosphine hydrochloride, dried, weighing 61.3g, yield 82.4%
Allgemeine Beschreibung
Tris (2-carboxyethyl) phosphine (TCEP) is very effective in cleaving disulfide bonds in aqueous solution. It dissolves in water and is odorless, unlike other trialkylphosphines (tributylphosphine). It is also less toxic than 2-mercaptoethanol. These advantages make it better than the other reducing agents.
Reaktivität anzeigen
Nucleophilic Substitution by the Phosphorus Atom of TCEP. 1. The phosphorus atom attacks one sulfur atom along the S-S bond. 2. A thioalkoxyphosphonium cation and a sulfhydryl anion are formed. 3. A rapid hydrolysis releases the second sulfhydryl molecule and the phosphine oxide. There are two main steps in the breaking of disulfide bridges and forming a free sulfhydryl using TCEP: cleavage of the S-S bond; oxidation of the phosphine and release of sulfhydryl.
Biochem/physiol Actions
Tris(2-carboxyethyl)phosphine hydrochloride solution reduces the disulfide bonds and leaves other functional groups intact in proteins.
Lager
Following reconstitution, aliquot and freeze (-20°C). TCEP retains stability when stored at an acidic or alkaline pH; avoid storage at pH 7.0-8.0. Also avoid exposure to high concentrations of phosphate ions (>150 mM). Stock solutions are stable for up to 3 months at -20°C.
Einzelnachweise
1) Fischer?et al.?(1993),?In situ reduction suitable for matrix-assisted laser desorption/ionization and liquid secondary ionization using tris(2-carboxyethyl)phosphine; Rapid Commun. Mass Spectrom.,?7?225 2) Kirley?et al.?(1989),?Reduction and fluorescent labeling of cyst(e)ine-containing proteins for subsequent structural analysis; Anal. Biochem.,?180?231 3) Getz?et al. (1999),?A comparison between the sulfhydryl reductants tris(2-carboxyethyl)phosphine and dithiothreitol for use in protein biochemistry; Anal. Biochem.,?273?73

Tris(2-carboxyethyl)phosphine hydrochloride Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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