CAS No 5961-85-3 , Propanoic acid,3,3',3''-phosphinidynetris-

Name: Propanoic acid,3,3',3''-phosphinidynetris-
Synonyms: TCEP;Propanoic acid,3,3',3''-phosphinidynetris-; Phosphine,tris(2-carboxyethyl)-; 3,3',3''-Phosphinidynetris[propanoic acid]; 3,3',3''-Phosphinidynetripropionicacid; Tris(2-carboxyethyl)phosphine;Propionicacid, 3,3',3''-phosphinidynetri- (7CI,8CI);Tris(carboxyethyl)phosphine;
CAS Registry Number:5961-85-3
Flash Point: 267.9°C
Boiling Point: 519.4°C at 760 mmHg
Flash Point: 267.9°C
Molecular Weight: 0
InChI: InChI=1/C9H15O6P/c10-7(11)1-4-16(5-2-8(12)13)6-3-9(14)15/h1-6H2,(H,10,11)(H,12,13)(H,14,15)
Molecular Formula: C9H15 O6 P
Molecular Structure:

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References of Propanoic acid,3,3',3''-phosphinidynetris-

Title: TCEP
CAS Registry Number: 5961-85-3
CAS Name: 3,3￠,3￠￠-Phosphinidynetrispropanoic acid
Synonyms: tris(2-carboxyethyl)phosphine
Molecular Formula: C9H15O6P
Molecular Weight: 250.19
Percent Composition: C 43.21%, H 6.04%, O 38.37%, P 12.38%
Literature References: Disulfide reducing agent. Prepn: M. M. Rauhut et al., J. Am. Chem. Soc. 81, 1103 (1959); and mechanism: J. A. Burns et al., J. Org. Chem. 56, 2648 (1991). Use as a reducing agent in measurement of redox activity: M. Neuburger et al., Eur. J. Biochem. 267, 2882 (2000); in determn of aminothiols: J. Krijt et al., Clin. Chem. 47, 1821 (2001); in protein sequencing: T.-Y. Yen et al., J. Mass Spectrom. 37, 15 (2002); B. P. English et al., J. Am. Chem. Soc. 124, 4995 (2002).

Derivative Type: Hydrochloride
CAS Registry Number: 51805-45-9
Properties: Odorless, air-stable, white crystalline solid. mp 176°. uv max: 192, 218 nm (e 150, 180 L mol-1 cm-1). Water soluble. pKa 7.66. When pH of dilute solutions is less than pKa, air oxidation occurs slowly.
Melting point: mp 176°
pKa: pKa 7.66
Absorption maximum: uv max: 192, 218 nm (e 150, 180 L mol-1 cm-1)

Use: Biochemical tool for selective reduction of disulfide bridges at low pH; reductant for redox assays.