Guaiacol


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Related to Guaiacol: guaifenesin

guaiacol

[′gwī·ə‚kȯl]
(organic chemistry)
C6H4(OH)OCH3 A colorless, crystalline compound, soluble in water; used as a reagent to determine the presence of such substances as lignin, narceine, and nitrous acid.

Guaiacol

 

an organic compound with a strong, characteristic smell. It is a monomethyl ether of pyrocatechol. Colorless crystals: melting point, 28.4° C; boiling point, 205° C. Readily soluble in ethanol and chloroform and poorly soluble in petroleum ether; it dissolves iodine and sulfur. Ferric chloride gives an alcohol solution of guaiacol a blue coloration verging on green. Guaiacol is present in the distillation products of guaiacum, in the high-boiling distillates of beech tar, and in the dry distillation products of wood of leaf-bearing and coniferous species.

Guaiacol is produced synthetically by partial methylation of pyrocatechol or by diazotization of o-anisidine and decomposition of the diazo compound with water. It is used to synthesize vanillin and medicinal preparations.

References in periodicals archive ?
This report provides in depth study of "Guaiacol Market" using SWOT analysis i.e.
For this study, the phenolic compounds that were chosen to explore any potential relationships were syringol, eugenol, isoeugenol, guaiacol, p-cresol, and phenol because they are the major components identified in wood smoke, and previous studies have linked different wood types and smoking conditions with different concentration of these phenolic compounds [8].
But a shot of water forces it back towards the top, providing the full force of guaiacol's taste.
In conclusion, based on the results of this study, it can be stated that dominant compounds in dry-cured loins were: aromatic hydrocarbon (toluene); alkanes (hexane, heptane, and 2,2,4-trimethylpentane); aldehyde (hexanal); alcohol (2-furanmethanol); ketone (3-hydroxy-2-butanone); phenol (guaiacol); and terpenes (eucalyptol, cymene, y-terpinen, and limonene).
Guaiacol (GA), L-dihydroxyphenylalanine (L-DOPA), lipopolysaccharide (LPS), and lipoteichoic acid (LTA) were purchased from Sigma-Aldrich.
They were retinoic acid, tyramine, 5,8-tetradecadienoic acid, citrate acid, 8-hydroxyguanine, arachidonic acid, guaiacol, N-acetyl-L-tyrosine, and L-cystine.
Reported here are density functional theory (DFT) results on models of copper (II)-porphyrins (models of [5,10,15,20- tetrakis(N-methylpyridyl-4)porhinato]copper(II)tetratosylate) with a set of axial ligands - nitrite (both the nitrogen-bound isomer and the oxygen-bound isomer, i.e., nitro and nitrito), imidazole, two forms of phenol (neutral and anionic), and water - related to an unexpected range of electronic structures detectable in electron paramagnetic resonance (EPR) spectra of a water-soluble copper porphyrin with water, nitrite, imidazole, dithionite, 2,2'-azino-bis(3-ethylbenzthiazoline-6- sulphonic acid) (ABTS) and guaiacol.
Peroxidase activity was determined at 436 nm by its ability to convert guaiacol to tetraguaiacol ([epsilon] = 26.6[mM.sup.-1] [cm.sup.-1]) according to the method of Polle et al.
The activity of peroxidase antioxidant enzyme was assayed by following the guaiacol dehydrogenation spectrophotometrically at 436 nanometres [32].
Corli Witthuhn e colaboradores [29] determinaram analito guaiacol utilizando um biossensor, a base da enzima peroxidase, a qual na presenca de peroxido de hidrogenio reage com o guaiacol para formar um componente marrom, o 3-3'-dimetoxi-4,4'-bifenoquinona, que pode ser detectado por espectrofotometria em 420 nm ou 470 nm.
Al-Abadleh selected two organics: the aromatic oil derivative guaiacol and the natural anti-oxidant catechol, as model compounds in atmospheric aerosols.