PHOSPHOENOLPYRUVIC ACID MONOPOTASSIUM SALT

Details:

Melting point     175 °C (dec.)(lit.)
storage temp.     2-8°C
form     solid
Water Solubility     Soluble in water. Slightly soluble in methanol.
Sensitive     Hygroscopic
BRN     4603446
CAS DataBase Reference    4265-07-0(CAS DataBase Reference)
EPA Substance Registry System    2-Propenoic acid, 2-(phosphonooxy)-, monopotassium salt (4265-07-0)
Safety Information
Safety Statements     24/25
WGK Germany     3
F     3-10
TSCA     Yes
HS Code     29199000
MSDS Information
Provider    Language
SigmaAldrich    English
ACROS    English
ALFA    English
PHOSPHOENOLPYRUVIC ACID MONOPOTASSIUM SALT Usage And Synthesis
Chemical Properties    white to light yellow fine crystalline powder
Uses    Substrate for many kinase reactions.
Purification Methods    KPEP is purified via the monocyclohexylamine salt (see next entry). The salt (534mg) in H2O (10mL) is added to Dowex 50Wx4 H+ form (200-400 mesh, 2mL, H2O washed) and stirred gently for 30minutes and filtered. The resin is washed with H2O (6mL), and the combined solutions are adjusted to pH 7.4 with 3N KOH (~1.4mL) and the volume adjusted to 18.4mL with H2O to give a solution of 0.1M KPEP which can be lyophilised to a pure powder and is very good for enzyme work. It has been recrystallised from MeOH/Et2O. [Clark & Kirby Biochemical Preparations 11 103 1966, Wold & Ballou J Biol Chem 227 301 1957, Cherbuliez & Rabinowitz Helv Chim Acta 39 1461 1956, Beilstein 3 IV 977.] The triNa salt [5541-93-5] M 360.0, is purified as follows: the salt (1g) is dissolved in MeOH (40mL) and dry Et2O is added in excess. The white crystals are collected and dried over P2O5 at 20o. [Cramer & Voges Chem Ber 92 952 1959, Beilstein 3 IV 977.]
PHOSPHOENOLPYRUVIC ACID MONOPOTASSIUM SALT Preparation Products And Raw materials
Raw materials    2-dihydroxyphosphinoyloxyacrylic acid
Preparation Products    CHORISMIC ACID