A chemical and bi product of fermentation that is perceived as green apples in both aromas and flavor.

Aldehyde, formula CH3CHO, formed in the oxidation of ethane and other organic compounds. It is a major precursor to the pollutant, peroxyacetyl nitrate (PAN).

(n) a colorless volatile water-soluble liquid aldehyde used chiefly in the manufacture of acetic acid and perfumes and drugs

The main breakdown product of alcohol metabolism; accumulation of it in the bloodstream may produce flushing (a feeling of heat in the face or chest) and vomiting.

Acetaldehyde is the major metabolite formed when alcohol is broken down by the liver. Acetaldehyde is toxic to the human body.

Illustrated Glossary of Organic Chemistry Acetaldehyde: An aldehyde containing a methyl group bonded to a formyl group. Molecular Structure of Acetaldehyde Lewis structure    Ball and spoke model    S [..]

is a toxic substance, implicated in the alcohol flush reaction and in certain physical sequelae of alcohol consumption.See also

A colorless, flammable liquid used in the manufacture of Acetic Acid, perfumes, and flavors. It is also an intermediate in the Metabolism of alcohol. It has a general narcotic action and also causes i [..]

Oops, I should have used the systematic name, ethanal! This is a good example of a case where the IUPAC system may be logical, but can easily engender no end of confusion.Ethanol and ethanal are very differnt:

A colorless, flammable liquid used in the manufacture of acetic acid, perfumes, and flavors. It is also an intermediate in the metabolism of alcohol. It has a general narcotic action and also causes i [..]

A colorless, volatile, and water-soluble compound found naturally in grapes and wines in trace amounts and produced both by fermentation and oxidation. It has a pungent, fruitlike odor and is desirabl [..]

Green apple aroma, a byproduct of fermentation.

C2H4O, a fairly simple aldehyde (second in the analogous series after formaldehyde) that is found in the atmosphere as a result of emissions from the manufacture of acetic acid, plastics, raw material [..]

<chemical> A colourless, flammable liquid used in the manufacture of acetic acid, perfumes, and flavours. It is also an intermediate in the metabolism of alcohol. It has a general narcotic action and also causes irritation of mucous membranes. Large doses may cause death from respiratory paralysis. Chemical name: Acetaldehyde (12 Dec 1998)

An aldehyde used as a starting material in the synthesis of acetic acid, n-butyl alcohol, ethyl acetate, and other chemical compounds.

(organic compound) An organic compound (CH₃CHO). Sometimes called ethanal or acetic aldehyde. See aldehyde.