Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Glyoxylate ethylene glycol

Di-(/)-chlorophenyl)-acetic acid has been made by the action of alcoholic potassium hydroxide on l,l-di-(/>-chlorophenyl)-2,2-dichloroethane by the action of barium hydroxide on DDT in ethylene glycol and by the condensation of chlorobenzene with glyoxylic acid. ... [Pg.23]

Ethylene glycol is rapidly metabolised to glyco-laldehyde, then glycolic acid, glyoxylic acid and finally to oxalic acid. The metabolites are toxic to kidneys, brain and heart. [Pg.512]

Ethylene glycol (ethane-1,2-diol), a major component of antifreeze, is readily metabolized by many organisms that have the glyoxylate cycle. Can you propose a sequence of catabolic steps that can explain the catabolism of ethylene glycol ... [Pg.303]

With a 1 1 molar ratio of ethylene glycol and H2O2, the selectivity to glycolic acid was 86% at 44% conversion of the glycol and 99% conversion of the H202. Small amounts of glyoxylic acid (3%) and formic acid were also detected. [Pg.302]

Ethylene glycol is used as a freezing-point depressant in automotive antifreeze. It is highly toxic because the enzyme alcohol dehydrogenase and the coenzyme nicotinamide adenine dinucleotide (NAD) oxidize ethylene glycol to much more liver-toxic compounds like glyoxal, hydroxyacetaldehyde, glyoxylic... [Pg.293]

Ethylene glycol is sometimes used in suicide attempts. It is not itself toxic, but is converted to toxic metabolites. Conversion to glycoaldehyde by alcohol dehydrogenase is the rate-limiting step, and further metabohsm jdelds gly-colate, glyoxylate, and oxalate. [Pg.1517]

Of the more complex fuels, ethylene glycol has shown the most promise. There have been reports of good performance with Pb on Pt or R + Au in alkaline solutions with current densities of 100 mA/cm at approximately 0.7V (RHE). In addition to methanol, the higher alcohols have been studied as a series and individually in the case of ethanol , propanol " , and butanol. " Other fuels investigated include glyoxylic acid ", glyoxal " , d-glucose "" and 1,2-propane-diol. °... [Pg.34]

A. Ethylene glycol is metabolized by alcohol dehydrogenase to glycoaldehyde, which is then metabolized to glycolic, glyoxylic, and oxalic acids. These acids. [Pg.194]

Administer pyridoxins (see p 499), folate (p 447), and thiamine (p 505), cofactors required tor the metabolism of ethylene glycol that may alleviate toxicity by enhancing metabolism of glyoxylic acid to nontoxic metabolites. [Pg.198]

I. Pharmacology. Thiamine (vitamin B ) is a water-soluble vitamin that acts as an essential cofactor for various pathways of carbohydrate metabolism. Thiamine also acts as a cofactor in the metabolism of glyoxylic acid (produced in ethylene glycol intoxication). Thiamine deficiency may result in beriberi and Wemicke-Korsakoff syndrome. Thiamine is rapidly absorbed after oral, intramuscular, or intravenous administration. However, parenteral administration is recommended for initial management of thiamine deficiency syndromes. [Pg.505]

B. Adjunctive treatment in patients poisoned with ethylene glycol to possibly enhance the detoxification of glyoxylic acid. [Pg.505]

Illanes A, Cabrera Z, WUson L et al. (2003) Synthesis of cephalexin in ethylene glycol with glyoxyl-agarose immobUised peniciUin acylase temperature and pH optimisation. Proc... [Pg.287]

The steps of the ethylene glycol oxidation mechanism (3) are formation of glycolic aldehyde, glyoxal or glycolic acid, glyoxylic acid, oxalic acid and finally, formic acid is obtained. For this reason, in the next experiment, the effect of adding glyoxal and oxalic acid in... [Pg.609]

Glycolate and glyoxylate also plasma and urinary ethylene glycol metabolites Excreted as sulfate and glucuronide conjugates. Other metabolites include catechol and hydroquinone. Urinary phenol excretion not a reliable indicator of benzene exposure. trans,trans-MA and S-phenyl mercapturic acid excretion have been used to assess exposure trans, trans-MA and phenol additional benzene metabolites... [Pg.1760]

C). When the infiltrated PMMA template composite is heated, mixed metal nitrates oxidize ethylene glycol to form mixed metal glyoxylate solid in the voids at a temperature lower than Tg of PMMA (about 100 °C) [41,77,78]. Further calcination removes the polymer template and causes the conversion of glyoxylate salt into LaFeOs [41,65,73]. [Pg.137]

See other pages where Glyoxylate ethylene glycol is mentioned: [Pg.214]    [Pg.17]    [Pg.35]    [Pg.481]    [Pg.295]    [Pg.98]    [Pg.570]    [Pg.379]    [Pg.52]    [Pg.260]    [Pg.751]    [Pg.752]    [Pg.867]    [Pg.566]    [Pg.1098]    [Pg.232]    [Pg.847]    [Pg.265]    [Pg.499]    [Pg.847]    [Pg.27]    [Pg.716]    [Pg.248]    [Pg.205]    [Pg.4878]    [Pg.136]    [Pg.499]    [Pg.519]    [Pg.137]    [Pg.317]    [Pg.36]    [Pg.77]    [Pg.80]   
See also in sourсe #XX -- [ Pg.867 ]



SEARCH



Glyoxylate

© 2024 chempedia.info