oxidation indicator
Synonym: 2-Methoxyphenol, Catechol monomethyl ether,
Pyrocatechol monomethyl ether
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Linear
Formula (CH3O)C6H4OH
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Molecular
Weight 124.14
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Beilstein
Registry Number 508112
Properties
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Related Categories
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Biochemicals and Reagents, Cell Biology, Curcuma longa (Turmeric), Enzyme Substrates, Enzymes, Inhibitors, and Substrates,
More...
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vapor density
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4.27 (vs air)
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vapor pressure
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0.11 mmHg ( 25 °C)
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InChI Key
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LHGVFZTZFXWLCP-UHFFFAOYSA-N
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assay
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≥98.0%
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form
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liquid
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solid
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refractive index
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n20/D 1.543(lit.)
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Description
Caution
May be liquid at room temperature.
Biochem/physiol
Actions
Guaiacol, along with 2,4,6-trichloroanisole, is
responsible for cork taint in wine. A method has been developed for extraction
and quantitation of the two compounds
Guaiacol is a naturally occurring organic
compound with
the formula C6H4(OH)(OCH3), first
isolated by Otto Unverdorben in 1826.Although it is
biosynthesized by a variety of organisms, this
yellowish aromatic oil is usually derived from guaiacum or
wood creosote.
Detailed description
Samples
darken upon exposure to air and light. Guaiacol is present in wood smoke, resulting from the pyrolysis of lignin. The compound
contributes to the flavor of many compounds, e.g., roasted coffee.
Uses and chemical reactions
Guaiacol is a precursor to various flavorants, such as eugenol and vanillin. An estimated
85% of the worlds supply of vanillin comes from guaiacol. The route
entails condensation of glyoxylic acid with guaiacol to give
mandelic acid, which is oxidized to produce a phenylglyoxylic acid. This acid
undergoes a decarboxylation to afford vanillin.
In basic solution, it is readily oxidized, giving
yellowish brown and absorbs light maximally at about 470 nm.
Packaging
1 kg in glass bottle
100, 250, 500 g in glass bottle
PRICE
$216.98/KG OR $98.62/IB
For more information:
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contact person: emeaba uche
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